Passwordless feature branch PR (#2100)

* [SG-471] Passwordless device login screen (#2017)

* [SSG-471] Added UI for the device login request response.

* [SG-471] Added text resources and arguments to Page.

* [SG-471] Added properties to speed up page bindings

* [SG-471] Added mock services. Added Accept/reject command binding, navigation and toast messages.

* [SG-471] fixed code styling with dotnet-format

* [SG-471] Fixed back button placement. PR fixes.

* [SG-471] Added new Origin parameter to the page.

* [SG-471] PR Fixes

* [SG-471] PR fixes

* [SG-471] PR Fix: added FireAndForget.

* [SG-471] Moved fire and forget to run on ui thread task.

* [SG-381] Passwordless - Add setting to Mobile (#2037)

* [SG-381] Added settings option to approve passwordless login request. If user has notifications disabled, prompt to go to settings and enable them.

* [SG-381] Update settings pop up texts.

* [SG-381] Added new method to get notifications state on device settings. Added userId to property saved on device to differentiate value between users.

* [SG-381] Added text for the popup on selection.

* [SG-381] PR Fixes

* [SG-408] Implement passwordless api methods (#2055)

* [SG-408] Update notification model.

* [SG-408] removed duplicated resource

* [SG-408] Added implementation to Api Service of new passwordless methods.

* removed qa endpoints

* [SG-408] Changed auth methods implementation, added method call to viewmodel.

* [SG-408] ran code format

* [SG-408] PR fixes

* [SG-472] Add configuration for new notification type (#2056)

* [SG-472] Added methods to present local notification to the user. Configured new notification type for passwordless logins

* [SG-472] Updated code to new api service changes.

* [SG-472] ran dotnet format

* [SG-472] PR Fixes.

* [SG-472] PR Fixes

* [SG-169] End-to-end testing refactor. (#2073)

* [SG-169] Passwordless demo change requests (#2079)

* [SG-169] End-to-end testing refactor.

* [SG-169] Fixed labels. Changed color of Fingerprint phrase. Waited for app to be in foreground to launch passwordless modal to fix Android issues.

* [SG-169] Anchored buttons to the bottom of the screen.

* [SG-169] Changed device type from enum to string.

* [SG-169] PR fixes

* [SG-169] PR fixes

* [SG-169] Added comment on static variable

src/Android/MainActivity.cs

@@ -12,6 +12,7 @@ using Android.Runtime;
 using Android.Views;
 using Bit.App.Abstractions;
 using Bit.App.Models;
+using Bit.App.Resources;
 using Bit.App.Utilities;
 using Bit.Core;
 using Bit.Core.Abstractions;
@@ -86,6 +87,7 @@ namespace Bit.Droid
             Xamarin.Essentials.Platform.Init(this, savedInstanceState);
             Xamarin.Forms.Forms.Init(this, savedInstanceState);
             _appOptions = GetOptions();
+            CreateNotificationChannel();
             LoadApplication(new App.App(_appOptions));
             DisableAndroidFontScale();
 
@@ -407,6 +409,25 @@ namespace Bit.Droid
             await _eventService.UploadEventsAsync();
         }
 
+        private void CreateNotificationChannel()
+        {
+#if !FDROID
+            if (Build.VERSION.SdkInt < BuildVersionCodes.O)
+            {
+                // Notification channels are new in API 26 (and not a part of the
+                // support library). There is no need to create a notification
+                // channel on older versions of Android.
+                return;
+            }
+
+            var channel = new NotificationChannel(Constants.AndroidNotificationChannelId, AppResources.AllNotifications, NotificationImportance.Default);
+            if(GetSystemService(NotificationService) is NotificationManager notificationManager)
+            {
+                notificationManager.CreateNotificationChannel(channel);
+            }
+#endif
+        }
+
         private void DisableAndroidFontScale()
         {
             try

src/Android/Push/FirebaseMessagingService.cs

@@ -1,7 +1,9 @@
 #if !FDROID
+using System;
 using Android.App;
 using Bit.App.Abstractions;
 using Bit.Core.Abstractions;
+using Bit.Core.Services;
 using Bit.Core.Utilities;
 using Firebase.Messaging;
 using Newtonsoft.Json;
@@ -16,34 +18,41 @@ namespace Bit.Droid.Push
     {
         public async override void OnNewToken(string token)
         {
-            var stateService = ServiceContainer.Resolve<IStateService>("stateService");
+            try { 
-            var pushNotificationService = ServiceContainer.Resolve<IPushNotificationService>("pushNotificationService");
+                var stateService = ServiceContainer.Resolve<IStateService>("stateService");
+                var pushNotificationService = ServiceContainer.Resolve<IPushNotificationService>("pushNotificationService");
             
-            await stateService.SetPushRegisteredTokenAsync(token);
+                await stateService.SetPushRegisteredTokenAsync(token);
-            await pushNotificationService.RegisterAsync();
+                await pushNotificationService.RegisterAsync();
+            }
+            catch (Exception ex)
+            {
+                Logger.Instance.Exception(ex);
+            }
         }
         
         public async override void OnMessageReceived(RemoteMessage message)
         {
-            if (message?.Data == null)
-            {
-                return;
-            }
-            var data = message.Data.ContainsKey("data") ? message.Data["data"] : null;
-            if (data == null)
-            {
-                return;
-            }
             try
             {
+                if (message?.Data == null)
+                {
+                    return;
+                }
+                var data = message.Data.ContainsKey("data") ? message.Data["data"] : null;
+                if (data == null)
+                {
+                    return;
+                }
+
                 var obj = JObject.Parse(data);
                 var listener = ServiceContainer.Resolve<IPushNotificationListenerService>(
                     "pushNotificationListenerService");
                 await listener.OnMessageAsync(obj, Device.Android);
             }
-            catch (JsonReaderException ex)
+            catch (Exception ex)
             {
-                System.Diagnostics.Debug.WriteLine(ex.ToString());
+                Logger.Instance.Exception(ex);
             }
         }
     }

src/Android/Services/AndroidPushNotificationService.cs

@@ -1,8 +1,11 @@
 #if !FDROID
 using System;
 using System.Threading.Tasks;
+using Android.App;
+using Android.Content;
 using AndroidX.Core.App;
 using Bit.App.Abstractions;
+using Bit.Core;
 using Bit.Core.Abstractions;
 using Xamarin.Forms;
 
@@ -23,6 +26,11 @@ namespace Bit.Droid.Services
 
         public bool IsRegisteredForPush => NotificationManagerCompat.From(Android.App.Application.Context)?.AreNotificationsEnabled() ?? false;
 
+        public Task<bool> AreNotificationsSettingsEnabledAsync()
+        {
+            return Task.FromResult(IsRegisteredForPush);
+        }
+
         public async Task<string> GetTokenAsync()
         {
             return await _stateService.GetPushCurrentTokenAsync();
@@ -47,6 +55,36 @@ namespace Bit.Droid.Services
             // Do we ever need to unregister?
             return Task.FromResult(0);
         }
+
+        public void DismissLocalNotification(string notificationId)
+        {
+            if (int.TryParse(notificationId, out int intNotificationId))
+            {
+                var notificationManager = NotificationManagerCompat.From(Android.App.Application.Context);
+                notificationManager.Cancel(intNotificationId);
+            }
+        }
+
+        public void SendLocalNotification(string title, string message, string notificationId)
+        {
+            if (string.IsNullOrEmpty(notificationId))
+            {
+                throw new ArgumentNullException("notificationId cannot be null or empty.");
+            }
+            
+            var context = Android.App.Application.Context;
+            var intent = new Intent(context, typeof(MainActivity));
+            var pendingIntent = PendingIntent.GetActivity(context, 20220801, intent, PendingIntentFlags.UpdateCurrent);
+            var builder = new NotificationCompat.Builder(context, Constants.AndroidNotificationChannelId)
+               .SetContentIntent(pendingIntent)
+               .SetContentTitle(title)
+               .SetContentText(message)
+               .SetSmallIcon(Resource.Mipmap.ic_launcher)
+               .SetAutoCancel(true);
+
+            var notificationManager = NotificationManagerCompat.From(context);
+            notificationManager.Notify(int.Parse(notificationId), builder.Build());
+        }
     }
 }
 #endif

src/Android/Services/DeviceActionService.cs

@@ -964,5 +964,14 @@ namespace Bit.Droid.Services
             }
             activity.RunOnUiThread(() => activity.Window.AddFlags(WindowManagerFlags.Secure));
         }
+
+        public void OpenAppSettings()
+        {
+            var intent = new Intent(Android.Provider.Settings.ActionApplicationDetailsSettings);
+            intent.AddFlags(ActivityFlags.NewTask);
+            var uri = Android.Net.Uri.FromParts("package", Application.Context.PackageName, null);
+            intent.SetData(uri);
+            Application.Context.StartActivity(intent);
+        }
     }
 }

src/App/Abstractions/IDeviceActionService.cs

@@ -49,5 +49,6 @@ namespace Bit.App.Abstractions
         float GetSystemFontSizeScale();
         Task OnAccountSwitchCompleteAsync();
         Task SetScreenCaptureAllowedAsync();
+        void OpenAppSettings();
     }
 }

src/App/Abstractions/IPushNotificationService.cs

@@ -1,12 +1,16 @@
-using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Threading.Tasks;
 
 namespace Bit.App.Abstractions
 {
     public interface IPushNotificationService
     {
         bool IsRegisteredForPush { get; }
+        Task<bool> AreNotificationsSettingsEnabledAsync();
         Task<string> GetTokenAsync();
         Task RegisterAsync();
         Task UnregisterAsync();
+        void SendLocalNotification(string title, string message, string notificationId);
+        void DismissLocalNotification(string notificationId);
     }
 }

src/App/App.csproj

@@ -123,6 +123,9 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Remove="Pages\Accounts\AccountsPopupPage.xaml.cs" />
+    <Compile Update="Pages\Accounts\LoginPasswordlessPage.xaml.cs">
+      <DependentUpon>LoginPasswordlessPage.xaml</DependentUpon>
+    </Compile>
   </ItemGroup>
 
   <ItemGroup>

src/App/App.xaml.cs

@@ -7,6 +7,7 @@ using Bit.App.Resources;
 using Bit.App.Services;
 using Bit.App.Utilities;
 using Bit.App.Utilities.AccountManagement;
+using Bit.Core;
 using Bit.Core.Abstractions;
 using Bit.Core.Enums;
 using Bit.Core.Models.Data;
@@ -25,13 +26,13 @@ namespace Bit.App
         private readonly IStateService _stateService;
         private readonly IVaultTimeoutService _vaultTimeoutService;
         private readonly ISyncService _syncService;
-        private readonly IPlatformUtilsService _platformUtilsService;
         private readonly IAuthService _authService;
-        private readonly IStorageService _secureStorageService;
         private readonly IDeviceActionService _deviceActionService;
         private readonly IAccountsManager _accountsManager;
-
+        private readonly IPushNotificationService _pushNotificationService;
         private static bool _isResumed;
+        // this variable is static because the app is launching new activities on notification click, creating new instances of App. 
+        private static bool _pendingCheckPasswordlessLoginRequests;
 
         public App(AppOptions appOptions)
         {
@@ -47,10 +48,9 @@ namespace Bit.App
             _vaultTimeoutService = ServiceContainer.Resolve<IVaultTimeoutService>("vaultTimeoutService");
             _syncService = ServiceContainer.Resolve<ISyncService>("syncService");
             _authService = ServiceContainer.Resolve<IAuthService>("authService");
-            _platformUtilsService = ServiceContainer.Resolve<IPlatformUtilsService>("platformUtilsService");
-            _secureStorageService = ServiceContainer.Resolve<IStorageService>("secureStorageService");
             _deviceActionService = ServiceContainer.Resolve<IDeviceActionService>("deviceActionService");
             _accountsManager = ServiceContainer.Resolve<IAccountsManager>("accountsManager");
+            _pushNotificationService = ServiceContainer.Resolve<IPushNotificationService>();
 
             _accountsManager.Init(() => Options, this);
 
@@ -140,6 +140,10 @@ namespace Bit.App
                                 new NavigationPage(new RemoveMasterPasswordPage()));
                         });
                     }
+                    else if (message.Command == "passwordlessLoginRequest" || message.Command == "unlocked")
+                    {
+                        CheckPasswordlessLoginRequestsAsync().FireAndForget();
+                    }
                 }
                 catch (Exception ex)
                 {
@@ -148,11 +152,52 @@ namespace Bit.App
             });
         }
 
+        private async Task CheckPasswordlessLoginRequestsAsync()
+        {
+            if (!_isResumed)
+            {
+                _pendingCheckPasswordlessLoginRequests = true;
+                return;
+            }
+
+            _pendingCheckPasswordlessLoginRequests = false;
+            if (await _vaultTimeoutService.IsLockedAsync())
+            {
+                return;
+            }
+
+
+            var notification = await _stateService.GetPasswordlessLoginNotificationAsync();
+            if (notification == null)
+            {
+                return;
+            }
+
+            // Delay to wait for the vault page to appear
+            await Task.Delay(2000);
+            var loginRequestData = await _authService.GetPasswordlessLoginRequestByIdAsync(notification.Id);
+            var page = new LoginPasswordlessPage(new LoginPasswordlessDetails()
+            {
+                PubKey = loginRequestData.PublicKey,
+                Id = loginRequestData.Id,
+                IpAddress = loginRequestData.RequestIpAddress,
+                Email = await _stateService.GetEmailAsync(),
+                FingerprintPhrase = loginRequestData.RequestFingerprint,
+                RequestDate = loginRequestData.CreationDate,
+                DeviceType = loginRequestData.RequestDeviceType,
+                Origin = loginRequestData.Origin,
+            });
+            await _stateService.SetPasswordlessLoginNotificationAsync(null);
+            _pushNotificationService.DismissLocalNotification(Constants.PasswordlessNotificationId);
+            await Device.InvokeOnMainThreadAsync(async () => await Application.Current.MainPage.Navigation.PushModalAsync(new NavigationPage(page)));
+        }
+
         public AppOptions Options { get; private set; }
 
         protected async override void OnStart()
         {
             System.Diagnostics.Debug.WriteLine("XF App: OnStart");
+            _isResumed = true;
             await ClearCacheIfNeededAsync();
             Prime();
             if (string.IsNullOrWhiteSpace(Options.Uri))
@@ -164,6 +209,10 @@ namespace Bit.App
                     SyncIfNeeded();
                 }
             }
+            if (_pendingCheckPasswordlessLoginRequests)
+            {
+                CheckPasswordlessLoginRequestsAsync().FireAndForget();
+            }
             if (Device.RuntimePlatform == Device.Android)
             {
                 await _vaultTimeoutService.CheckVaultTimeoutAsync();
@@ -196,6 +245,10 @@ namespace Bit.App
         {
             System.Diagnostics.Debug.WriteLine("XF App: OnResume");
             _isResumed = true;
+            if (_pendingCheckPasswordlessLoginRequests)
+            {
+                CheckPasswordlessLoginRequestsAsync().FireAndForget();
+            }
             if (Device.RuntimePlatform == Device.Android)
             {
                 ResumedAsync().FireAndForget();

src/App/Pages/Accounts/LoginPasswordlessPage.xaml

@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<pages:BaseContentPage
+    xmlns="http://xamarin.com/schemas/2014/forms"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    x:Class="Bit.App.Pages.LoginPasswordlessPage"
+    xmlns:pages="clr-namespace:Bit.App.Pages"
+    xmlns:controls="clr-namespace:Bit.App.Controls"
+    xmlns:u="clr-namespace:Bit.App.Utilities"
+    x:DataType="pages:LoginPasswordlessViewModel"
+    Title="{Binding PageTitle}">
+
+    <ContentPage.BindingContext>
+        <pages:LoginPasswordlessViewModel />
+    </ContentPage.BindingContext>
+
+    <ContentPage.Resources>
+        <ResourceDictionary>
+            <ToolbarItem Text="{u:I18n Close}" Clicked="Close_Clicked" Order="Primary" Priority="-1"
+                         x:Name="_closeItem" x:Key="closeItem" />
+        </ResourceDictionary>
+    </ContentPage.Resources>
+    <StackLayout 
+            Padding="7, 0, 7, 20">
+        <ScrollView
+            VerticalOptions="FillAndExpand">
+            <StackLayout>
+                <Label
+                    Text="{u:I18n AreYouTryingToLogIn}"
+                    FontSize="Title"
+                    FontAttributes="Bold"
+                    Margin="0,14,0,21"/>
+                <Label
+                    Text="{Binding LogInAttemptByLabel}"
+                    FontSize="Small"
+                    Margin="0,0,0,24"/>
+                <Label
+                    Text="{u:I18n FingerprintPhrase}"
+                    FontSize="Small"
+                    FontAttributes="Bold"/>
+                <controls:MonoLabel
+                    FormattedText="{Binding LoginRequest.FingerprintPhrase}"
+                    FontSize="Medium"
+                    TextColor="{DynamicResource FingerprintPhrase}"
+                    Margin="0,0,0,27"/>
+                <Label
+                    Text="{u:I18n DeviceType}"
+                    FontSize="Small"
+                    FontAttributes="Bold"/>
+                <Label
+                    Text="{Binding LoginRequest.DeviceType}"
+                    FontSize="Small"
+                    Margin="0,0,0,21"/>
+                <Label
+                    Text="{u:I18n IpAddress}"
+                    IsVisible="{Binding ShowIpAddress}"
+                    FontSize="Small"
+                    FontAttributes="Bold"/>
+                <Label
+                    Text="{Binding LoginRequest.IpAddress}"
+                    IsVisible="{Binding ShowIpAddress}"
+                    FontSize="Small"
+                    Margin="0,0,0,21"/>
+                <Label
+                    Text="{u:I18n Time}"
+                    FontSize="Small"
+                    FontAttributes="Bold"/>
+                <Label
+                    Text="{Binding TimeOfRequestText}"
+                    FontSize="Small"
+                    Margin="0,0,0,57"/>
+            </StackLayout>
+        </ScrollView>
+
+        <Button
+                Text="{u:I18n ConfirmLogIn}"
+                Command="{Binding AcceptRequestCommand}"
+                Margin="0,0,0,17"
+                StyleClass="btn-primary"/>
+        <Button
+                Text="{u:I18n DenyLogIn}"
+                Command="{Binding RejectRequestCommand}"
+                StyleClass="btn-secundary"/>
+
+    </StackLayout>
+</pages:BaseContentPage>

src/App/Pages/Accounts/LoginPasswordlessPage.xaml.cs

@@ -0,0 +1,31 @@
+using Xamarin.Forms;
+
+namespace Bit.App.Pages
+{
+    public partial class LoginPasswordlessPage : BaseContentPage
+    {
+        private LoginPasswordlessViewModel _vm;
+
+        public LoginPasswordlessPage(LoginPasswordlessDetails loginPasswordlessDetails)
+        {
+            InitializeComponent();
+            _vm = BindingContext as LoginPasswordlessViewModel;
+            _vm.Page = this;
+
+            _vm.LoginRequest = loginPasswordlessDetails;
+
+            if (Device.RuntimePlatform == Device.iOS)
+            {
+                ToolbarItems.Add(_closeItem);
+            }
+        }
+
+        private async void Close_Clicked(object sender, System.EventArgs e)
+        {
+            if (DoOnce())
+            {
+                await Navigation.PopModalAsync();
+            }
+        }
+    }
+}

src/App/Pages/Accounts/LoginPasswordlessViewModel.cs

@@ -0,0 +1,126 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows.Input;
+using Bit.App.Abstractions;
+using Bit.App.Resources;
+using Bit.App.Utilities;
+using Bit.Core;
+using Bit.Core.Abstractions;
+using Bit.Core.Enums;
+using Bit.Core.Utilities;
+using Xamarin.CommunityToolkit.ObjectModel;
+using Xamarin.Forms;
+
+namespace Bit.App.Pages
+{
+    public class LoginPasswordlessViewModel : BaseViewModel
+    {
+        private IDeviceActionService _deviceActionService;
+        private IAuthService _authService;
+        private IPlatformUtilsService _platformUtilsService;
+        private ILogger _logger;
+        private LoginPasswordlessDetails _resquest;
+
+        public LoginPasswordlessViewModel()
+        {
+            _deviceActionService = ServiceContainer.Resolve<IDeviceActionService>("deviceActionService");
+            _platformUtilsService = ServiceContainer.Resolve<IPlatformUtilsService>("platformUtilsService");
+            _authService = ServiceContainer.Resolve<IAuthService>("authService");
+            _logger = ServiceContainer.Resolve<ILogger>("logger");
+
+            PageTitle = AppResources.LogInRequested;
+
+            AcceptRequestCommand = new AsyncCommand(() => PasswordlessLoginAsync(true),
+                onException: ex => HandleException(ex),
+                allowsMultipleExecutions: false);
+            RejectRequestCommand = new AsyncCommand(() => PasswordlessLoginAsync(false),
+                onException: ex => HandleException(ex),
+                allowsMultipleExecutions: false);
+        }
+
+        public ICommand AcceptRequestCommand { get; }
+
+        public ICommand RejectRequestCommand { get; }
+
+        public string LogInAttemptByLabel => LoginRequest != null ? string.Format(AppResources.LogInAttemptByXOnY, LoginRequest.Email, LoginRequest.Origin) : string.Empty;
+
+        public string TimeOfRequestText => CreateRequestDate(LoginRequest?.RequestDate);
+
+        public bool ShowIpAddress => !string.IsNullOrEmpty(LoginRequest?.IpAddress);
+
+        public LoginPasswordlessDetails LoginRequest
+        {
+            get => _resquest;
+            set
+            {
+                SetProperty(ref _resquest, value, additionalPropertyNames: new string[]
+                    {
+                        nameof(LogInAttemptByLabel),
+                        nameof(TimeOfRequestText),
+                        nameof(ShowIpAddress),
+                    });
+            }
+        }
+
+        private async Task PasswordlessLoginAsync(bool approveRequest)
+        {
+            await _deviceActionService.ShowLoadingAsync(AppResources.Loading);
+            await _authService.PasswordlessLoginAsync(LoginRequest.Id, LoginRequest.PubKey, approveRequest);
+            await _deviceActionService.HideLoadingAsync();
+            await Page.Navigation.PopModalAsync();
+            _platformUtilsService.ShowToast("info", null, approveRequest ? AppResources.LogInAccepted : AppResources.LogInDenied);
+        }
+
+        private string CreateRequestDate(DateTime? requestDate)
+        {
+            if (!requestDate.HasValue)
+            {
+                return string.Empty;
+            }
+
+            var minutesSinceRequest = requestDate.Value.ToUniversalTime().Minute - DateTime.UtcNow.Minute;
+            if (minutesSinceRequest < 5)
+            {
+                return AppResources.JustNow;
+            }
+            if (minutesSinceRequest < 59)
+            {
+                return string.Format(AppResources.XMinutesAgo, minutesSinceRequest);
+            }
+
+            return requestDate.Value.ToShortTimeString();
+        }
+
+        private void HandleException(Exception ex)
+        {
+            Xamarin.Essentials.MainThread.InvokeOnMainThreadAsync(async () =>
+            {
+                await _deviceActionService.HideLoadingAsync();
+                await _platformUtilsService.ShowDialogAsync(AppResources.GenericErrorMessage);
+            }).FireAndForget();
+            _logger.Exception(ex);
+        }
+    }
+
+    public class LoginPasswordlessDetails
+    {
+        public string Id { get; set; }
+
+        public string Key { get; set; }
+
+        public string PubKey { get; set; }
+
+        public string Origin { get; set; }
+
+        public string Email { get; set; }
+
+        public string FingerprintPhrase { get; set; }
+
+        public DateTime RequestDate { get; set; }
+
+        public string DeviceType { get; set; }
+
+        public string IpAddress { get; set; }
+    }
+}

src/App/Pages/Settings/SettingsPage/SettingsPageViewModel.cs

@@ -30,7 +30,7 @@ namespace Bit.App.Pages
         private readonly IKeyConnectorService _keyConnectorService;
         private readonly IClipboardService _clipboardService;
         private readonly ILogger _loggerService;
-
+        private readonly IPushNotificationService _pushNotificationService;
         private const int CustomVaultTimeoutValue = -100;
 
         private bool _supportsBiometric;
@@ -42,6 +42,7 @@ namespace Bit.App.Pages
         private string _vaultTimeoutActionDisplayValue;
         private bool _showChangeMasterPassword;
         private bool _reportLoggingEnabled;
+        private bool _approvePasswordlessLoginRequests;
 
         private List<KeyValuePair<string, int?>> _vaultTimeouts =
             new List<KeyValuePair<string, int?>>
@@ -83,6 +84,7 @@ namespace Bit.App.Pages
             _keyConnectorService = ServiceContainer.Resolve<IKeyConnectorService>("keyConnectorService");
             _clipboardService = ServiceContainer.Resolve<IClipboardService>("clipboardService");
             _loggerService = ServiceContainer.Resolve<ILogger>("logger");
+            _pushNotificationService = ServiceContainer.Resolve<IPushNotificationService>();
 
             GroupedItems = new ObservableRangeCollection<ISettingsPageListItem>();
             PageTitle = AppResources.Settings;
@@ -133,6 +135,7 @@ namespace Bit.App.Pages
             _showChangeMasterPassword = IncludeLinksWithSubscriptionInfo() &&
                 !await _keyConnectorService.GetUsesKeyConnector();
             _reportLoggingEnabled = await _loggerService.IsEnabled();
+            _approvePasswordlessLoginRequests = await _stateService.GetApprovePasswordlessLoginsAsync();
             BuildList();
         }
 
@@ -326,6 +329,38 @@ namespace Bit.App.Pages
             BuildList();
         }
 
+        public async Task ApproveLoginRequestsAsync()
+        {
+            var options = new[]
+            {
+                    CreateSelectableOption(AppResources.Yes, _approvePasswordlessLoginRequests),
+                    CreateSelectableOption(AppResources.No, !_approvePasswordlessLoginRequests),
+            };
+
+            var selection = await Page.DisplayActionSheet(AppResources.UseThisDeviceToApproveLoginRequestsMadeFromOtherDevices, AppResources.Cancel, null, options);
+
+            if (selection == null || selection == AppResources.Cancel)
+            {
+                return;
+            }
+
+            _approvePasswordlessLoginRequests = CompareSelection(selection, AppResources.Yes);
+            await _stateService.SetApprovePasswordlessLoginsAsync(_approvePasswordlessLoginRequests);
+
+            BuildList();
+
+            if (!_approvePasswordlessLoginRequests || await _pushNotificationService.AreNotificationsSettingsEnabledAsync())
+            {
+                return;
+            }
+
+            var openAppSettingsResult = await _platformUtilsService.ShowDialogAsync(AppResources.ReceivePushNotificationsForNewLoginRequests, title: string.Empty, confirmText: AppResources.Settings, cancelText: AppResources.NoThanks);
+            if (openAppSettingsResult)
+            {
+                _deviceActionService.OpenAppSettings();
+            }
+        }
+
         public async Task VaultTimeoutActionAsync()
         {
             var options = _vaultTimeoutActions.Select(o =>
@@ -504,6 +539,12 @@ namespace Bit.App.Pages
                     ExecuteAsync = () => UpdatePinAsync()
                 },
                 new SettingsPageListItem
+                {
+                    Name = AppResources.ApproveLoginRequests,
+                    SubLabel = _approvePasswordlessLoginRequests ? AppResources.On : AppResources.Off,
+                    ExecuteAsync = () => ApproveLoginRequestsAsync()
+                },
+                new SettingsPageListItem
                 {
                     Name = AppResources.LockNow,
                     ExecuteAsync = () => LockAsync()

src/App/Resources/AppResources.Designer.cs

@@ -4151,6 +4151,127 @@ namespace Bit.App.Resources {
             }
         }
         
+        public static string LogInRequested {
+            get {
+                return ResourceManager.GetString("LogInRequested", resourceCulture);
+            }
+        }
+        
+        public static string AreYouTryingToLogIn {
+            get {
+                return ResourceManager.GetString("AreYouTryingToLogIn", resourceCulture);
+            }
+        }
+        
+        public static string LogInAttemptByXOnY {
+            get {
+                return ResourceManager.GetString("LogInAttemptByXOnY", resourceCulture);
+            }
+        }
+        
+        public static string DeviceType {
+            get {
+                return ResourceManager.GetString("DeviceType", resourceCulture);
+            }
+        }
+        
+        public static string IpAddress {
+            get {
+                return ResourceManager.GetString("IpAddress", resourceCulture);
+            }
+        }
+        
+        public static string Time {
+            get {
+                return ResourceManager.GetString("Time", resourceCulture);
+            }
+        }
+        
+        public static string Near {
+            get {
+                return ResourceManager.GetString("Near", resourceCulture);
+            }
+        }
+        
+        public static string ConfirmLogIn {
+            get {
+                return ResourceManager.GetString("ConfirmLogIn", resourceCulture);
+            }
+        }
+        
+        public static string DenyLogIn {
+            get {
+                return ResourceManager.GetString("DenyLogIn", resourceCulture);
+            }
+        }
+        
+        public static string JustNow {
+            get {
+                return ResourceManager.GetString("JustNow", resourceCulture);
+            }
+        }
+        
+        public static string XMinutesAgo {
+            get {
+                return ResourceManager.GetString("XMinutesAgo", resourceCulture);
+            }
+        }
+        
+        public static string LogInAccepted {
+            get {
+                return ResourceManager.GetString("LogInAccepted", resourceCulture);
+            }
+        }
+        
+        public static string LogInDenied {
+            get {
+                return ResourceManager.GetString("LogInDenied", resourceCulture);
+            }
+        }
+        
+        public static string ApproveLoginRequests {
+            get {
+                return ResourceManager.GetString("ApproveLoginRequests", resourceCulture);
+            }
+        }
+        
+        public static string UseThisDeviceToApproveLoginRequestsMadeFromOtherDevices {
+            get {
+                return ResourceManager.GetString("UseThisDeviceToApproveLoginRequestsMadeFromOtherDevices", resourceCulture);
+            }
+        }
+        
+        public static string AllowNotifications {
+            get {
+                return ResourceManager.GetString("AllowNotifications", resourceCulture);
+            }
+        }
+        
+        public static string ReceivePushNotificationsForNewLoginRequests {
+            get {
+                return ResourceManager.GetString("ReceivePushNotificationsForNewLoginRequests", resourceCulture);
+            }
+        }
+        
+        public static string NoThanks {
+            get {
+                return ResourceManager.GetString("NoThanks", resourceCulture);
+            }
+        }
+        
+        public static string ConfimLogInAttempForX {
+            get {
+                return ResourceManager.GetString("ConfimLogInAttempForX", resourceCulture);
+            }
+        }
+        
+        public static string AllNotifications
+        {
+            get
+            {
+                return ResourceManager.GetString("AllNotifications", resourceCulture);
+            }
+        }
         public static string PasswordType {
             get {
                 return ResourceManager.GetString("PasswordType", resourceCulture);

src/App/Resources/AppResources.resx

@@ -2314,6 +2314,66 @@ select Add TOTP to store the key safely</value>
   <data name="AreYouSureYouWantToEnableScreenCapture" xml:space="preserve">
     <value>Are you sure you want to enable Screen Capture?</value>
   </data>
+  <data name="LogInRequested" xml:space="preserve">
+    <value>Login requested</value>
+  </data>
+  <data name="AreYouTryingToLogIn" xml:space="preserve">
+    <value>Are you trying to log in?</value>
+  </data>
+  <data name="LogInAttemptByXOnY" xml:space="preserve">
+    <value>Login attempt by {0} on {1}</value>
+  </data>
+  <data name="DeviceType" xml:space="preserve">
+    <value>Device type</value>
+  </data>
+  <data name="IpAddress" xml:space="preserve">
+    <value>IP address</value>
+  </data>
+  <data name="Time" xml:space="preserve">
+    <value>Time</value>
+  </data>
+  <data name="Near" xml:space="preserve">
+    <value>Near</value>
+  </data>
+  <data name="ConfirmLogIn" xml:space="preserve">
+    <value>Confirm login</value>
+  </data>
+  <data name="DenyLogIn" xml:space="preserve">
+    <value>Deny login</value>
+  </data>
+  <data name="JustNow" xml:space="preserve">
+    <value>Just now</value>
+  </data>
+  <data name="XMinutesAgo" xml:space="preserve">
+    <value>{0} minutes ago</value>
+  </data>
+  <data name="LogInAccepted" xml:space="preserve">
+    <value>Login confirmed</value>
+  </data>
+  <data name="LogInDenied" xml:space="preserve">
+    <value>Login denied</value>
+  </data>
+  <data name="ApproveLoginRequests" xml:space="preserve">
+    <value>Approve login requests</value>
+  </data>
+  <data name="UseThisDeviceToApproveLoginRequestsMadeFromOtherDevices" xml:space="preserve">
+    <value>Use this device to approve login requests made from other devices.</value>
+  </data>
+  <data name="AllowNotifications" xml:space="preserve">
+    <value>Allow notifications</value>
+  </data>
+  <data name="ReceivePushNotificationsForNewLoginRequests" xml:space="preserve">
+    <value>Receive push notifications for new login requests</value>
+  </data>
+  <data name="NoThanks" xml:space="preserve">
+    <value>No thanks</value>
+  </data>
+  <data name="ConfimLogInAttempForX" xml:space="preserve">
+    <value>Confirm login attempt for {0}</value>
+  </data>
+  <data name="AllNotifications" xml:space="preserve">
+    <value>All notifications</value>
+  </data>
   <data name="PasswordType" xml:space="preserve">
     <value>Password Type</value>
   </data>

src/App/Services/NoopPushNotificationService.cs

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Threading.Tasks;
 using Bit.App.Abstractions;
 
 namespace Bit.App.Services
@@ -7,6 +8,11 @@ namespace Bit.App.Services
     {
         public bool IsRegisteredForPush => false;
 
+        public Task<bool> AreNotificationsSettingsEnabledAsync()
+        {
+            return Task.FromResult(false);
+        }
+
         public Task<string> GetTokenAsync()
         {
             return Task.FromResult(null as string);
@@ -21,5 +27,9 @@ namespace Bit.App.Services
         {
             return Task.FromResult(0);
         }
+
+        public void DismissLocalNotification(string notificationId) { }
+
+        public void SendLocalNotification(string title, string message, string notificationId) { }
     }
 }

src/App/Services/PushNotificationListenerService.cs

@@ -1,8 +1,11 @@
 #if !FDROID
 using System;
 using System.Diagnostics;
+using System.Linq;
 using System.Threading.Tasks;
 using Bit.App.Abstractions;
+using Bit.App.Pages;
+using Bit.App.Resources;
 using Bit.Core;
 using Bit.Core.Abstractions;
 using Bit.Core.Enums;
@@ -26,6 +29,7 @@ namespace Bit.App.Services
         private IAppIdService _appIdService;
         private IApiService _apiService;
         private IMessagingService _messagingService;
+        private IPushNotificationService _pushNotificationService;
 
         public async Task OnMessageAsync(JObject value, string deviceType)
         {
@@ -125,6 +129,27 @@ namespace Bit.App.Services
                         _messagingService.Send("logout");
                     }
                     break;
+                case NotificationType.AuthRequest:
+                    var passwordlessLoginMessage = JsonConvert.DeserializeObject<PasswordlessRequestNotification>(notification.Payload);
+
+                    // if the user has not enabled passwordless logins ignore requests
+                    if (!await _stateService.GetApprovePasswordlessLoginsAsync(passwordlessLoginMessage?.UserId))
+                    {
+                        return;
+                    }
+
+                    // if there is a request modal opened ignore all incoming requests
+                    if (App.Current.MainPage.Navigation.ModalStack.Any(p => p is NavigationPage navPage && navPage.CurrentPage is LoginPasswordlessPage))
+                    {
+                        return;
+                    }
+
+                    await _stateService.SetPasswordlessLoginNotificationAsync(passwordlessLoginMessage, passwordlessLoginMessage?.UserId);
+                    var userEmail = await _stateService.GetEmailAsync(passwordlessLoginMessage?.UserId);
+
+                    _pushNotificationService.SendLocalNotification(AppResources.LogInRequested, String.Format(AppResources.ConfimLogInAttempForX, userEmail), Constants.PasswordlessNotificationId);
+                    _messagingService.Send("passwordlessLoginRequest", passwordlessLoginMessage);
+                    break;
                 default:
                     break;
             }
@@ -204,6 +229,7 @@ namespace Bit.App.Services
             _appIdService = ServiceContainer.Resolve<IAppIdService>("appIdService");
             _apiService = ServiceContainer.Resolve<IApiService>("apiService");
             _messagingService = ServiceContainer.Resolve<IMessagingService>("messagingService");
+            _pushNotificationService = ServiceContainer.Resolve<IPushNotificationService>();
             _resolved = true;
         }
     }

src/App/Styles/Black.xaml

@@ -71,6 +71,6 @@
     <Color x:Key="NavigationBarTextColor">#ffffff</Color>
     
     <Color x:Key="HyperlinkColor">#52bdfb</Color>
-
+    <Color x:Key="FingerprintPhrase">#F08DC7</Color>
     <Color x:Key="ScanningToggleModeTextColor">#80BDFF</Color>
 </ResourceDictionary>

src/App/Styles/Dark.xaml

@@ -71,6 +71,6 @@
     <Color x:Key="NavigationBarTextColor">#ffffff</Color>
     
     <Color x:Key="HyperlinkColor">#52bdfb</Color>
-    
+    <Color x:Key="FingerprintPhrase">#F08DC7</Color>
     <Color x:Key="ScanningToggleModeTextColor">#80BDFF</Color>
 </ResourceDictionary>

src/App/Styles/Light.xaml

@@ -71,6 +71,6 @@
     <Color x:Key="NavigationBarTextColor">#ffffff</Color>
     
     <Color x:Key="HyperlinkColor">#175DDC</Color>
-
+    <Color x:Key="FingerprintPhrase">#C01176</Color>
     <Color x:Key="ScanningToggleModeTextColor">#80BDFF</Color>
 </ResourceDictionary>

src/App/Styles/Nord.xaml

@@ -71,6 +71,6 @@
     <Color x:Key="NavigationBarTextColor">#e5e9f0</Color>
     
     <Color x:Key="HyperlinkColor">#81a1c1</Color>
-
+    <Color x:Key="FingerprintPhrase">#F08DC7</Color>
     <Color x:Key="ScanningToggleModeTextColor">#80BDFF</Color>
 </ResourceDictionary>

src/Core/Abstractions/IApiService.cs

@@ -83,6 +83,8 @@ namespace Bit.Core.Abstractions
         Task<SendResponse> PutSendAsync(string id, SendRequest request);
         Task<SendResponse> PutSendRemovePasswordAsync(string id);
         Task DeleteSendAsync(string id);
+        Task<PasswordlessLoginResponse> GetAuthRequestAsync(string id);
+        Task<PasswordlessLoginResponse> PutAuthRequestAsync(string id, string key, string masterPasswordHash, string deviceIdentifier, bool requestApproved);
         Task<string> GetUsernameFromAsync(ForwardedEmailServiceType service, UsernameGeneratorConfig config);
     }
 }

src/Core/Abstractions/IAuthService.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using Bit.Core.Enums;
 using Bit.Core.Models.Domain;
+using Bit.Core.Models.Response;
 
 namespace Bit.Core.Abstractions
 {
@@ -25,6 +26,10 @@ namespace Bit.Core.Abstractions
         Task<AuthResult> LogInSsoAsync(string code, string codeVerifier, string redirectUrl, string orgId);
         Task<AuthResult> LogInCompleteAsync(string email, string masterPassword, TwoFactorProviderType twoFactorProvider, string twoFactorToken, bool? remember = null);
         Task<AuthResult> LogInTwoFactorAsync(TwoFactorProviderType twoFactorProvider, string twoFactorToken, string captchaToken, bool? remember = null);
+
+        Task<PasswordlessLoginResponse> GetPasswordlessLoginRequestByIdAsync(string id);
+        Task<PasswordlessLoginResponse> PasswordlessLoginAsync(string id, string pubKey, bool requestApproved);
+
         void LogOut(Action callback);
         void Init();
     }

src/Core/Abstractions/IStateService.cs

@@ -4,6 +4,7 @@ using System.Threading.Tasks;
 using Bit.Core.Enums;
 using Bit.Core.Models.Data;
 using Bit.Core.Models.Domain;
+using Bit.Core.Models.Response;
 using Bit.Core.Models.View;
 
 namespace Bit.Core.Abstractions
@@ -151,6 +152,10 @@ namespace Bit.Core.Abstractions
         Task<bool> GetScreenCaptureAllowedAsync(string userId = null);
         Task SetScreenCaptureAllowedAsync(bool value, string userId = null);
         Task SaveExtensionActiveUserIdToStorageAsync(string userId);
+        Task<bool> GetApprovePasswordlessLoginsAsync(string userId = null);
+        Task SetApprovePasswordlessLoginsAsync(bool? value, string userId = null);
+        Task<PasswordlessRequestNotification> GetPasswordlessLoginNotificationAsync(string userId = null);
+        Task SetPasswordlessLoginNotificationAsync(PasswordlessRequestNotification value, string userId = null);
         Task<UsernameGenerationOptions> GetUsernameGenerationOptionsAsync(string userId = null);
         Task SetUsernameGenerationOptionsAsync(UsernameGenerationOptions value, string userId = null);
     }

src/Core/Constants.cs

@@ -30,6 +30,8 @@
         public static string EventCollectionKey = "eventCollection";
         public static string RememberedEmailKey = "rememberedEmail";
         public static string RememberedOrgIdentifierKey = "rememberedOrgIdentifier";
+        public const string PasswordlessNotificationId = "26072022";
+        public const string AndroidNotificationChannelId = "general_notification_channel";
         public const int SelectFileRequestCode = 42;
         public const int SelectFilePermissionRequestCode = 43;
         public const int SaveFileRequestCode = 44;
@@ -85,6 +87,8 @@
         public static string ProtectedPinKey(string userId) => $"protectedPin_{userId}";
         public static string LastSyncKey(string userId) => $"lastSync_{userId}";
         public static string BiometricUnlockKey(string userId) => $"biometricUnlock_{userId}";
+        public static string ApprovePasswordlessLoginsKey(string userId) => $"approvePasswordlessLogins_{userId}";
+        public static string PasswordlessLoginNofiticationKey(string userId) => $"passwordlessLoginNofitication_{userId}";
         public static string UsernameGenOptionsKey(string userId) => $"usernameGenerationOptions_{userId}";
     }
 }

src/Core/Enums/NotificationType.cs

@@ -16,5 +16,12 @@
         SyncSettings = 10,
 
         LogOut = 11,
+
+        SyncSendCreate = 12,
+        SyncSendUpdate = 13,
+        SyncSendDelete = 14,
+
+        AuthRequest = 15,
+        AuthRequestResponse = 16,
     }
 }

src/Core/Models/Request/PasswordlessLoginRequest.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace Bit.Core.Models.Request
+{
+    public class PasswordlessLoginRequest
+    {
+        public PasswordlessLoginRequest(string key, string masterPasswordHash, string deviceIdentifier,
+            bool requestApproved)
+        {
+            Key = key ?? throw new ArgumentNullException(nameof(key));
+            MasterPasswordHash = masterPasswordHash ?? throw new ArgumentNullException(nameof(masterPasswordHash));
+            DeviceIdentifier = deviceIdentifier ?? throw new ArgumentNullException(nameof(deviceIdentifier));
+            RequestApproved = requestApproved;
+        }
+
+        public string Key { get; set; }
+        public string MasterPasswordHash { get; set; }
+        public string DeviceIdentifier { get; set; }
+        public bool RequestApproved { get; set; }
+    }
+}

src/Core/Models/Response/NotificationResponse.cs

@@ -33,4 +33,10 @@ namespace Bit.Core.Models.Response
         public string UserId { get; set; }
         public DateTime Date { get; set; }
     }
+
+    public class PasswordlessRequestNotification
+    {
+        public string UserId { get; set; }
+        public string Id { get; set; }
+    }
 }

src/Core/Models/Response/PasswordlessLoginResponse.cs

@@ -0,0 +1,19 @@
+using System;
+using Bit.Core.Enums;
+
+namespace Bit.Core.Models.Response
+{
+    public class PasswordlessLoginResponse
+    {
+        public string Id { get; set; }
+        public string PublicKey { get; set; }
+        public string RequestDeviceType { get; set; }
+        public string RequestIpAddress { get; set; }
+        public string RequestFingerprint { get; set; }
+        public string Key { get; set; }
+        public string MasterPasswordHash { get; set; }
+        public DateTime CreationDate { get; set; }
+        public bool RequestApproved { get; set; }
+        public string Origin { get; set; }
+    }
+}

src/Core/Services/ApiService.cs

@@ -534,6 +534,21 @@ namespace Bit.Core.Services
 
         #endregion
 
+        #region PasswordlessLogin
+
+        public Task<PasswordlessLoginResponse> GetAuthRequestAsync(string id)
+        {
+            return SendAsync<object, PasswordlessLoginResponse>(HttpMethod.Get, $"/auth-requests/{id}", null, true, true);
+        }
+
+        public Task<PasswordlessLoginResponse> PutAuthRequestAsync(string id, string encKey, string encMasterPasswordHash, string deviceIdentifier, bool requestApproved)
+        {
+            var request = new PasswordlessLoginRequest(encKey, encMasterPasswordHash, deviceIdentifier, requestApproved);
+            return SendAsync<object, PasswordlessLoginResponse>(HttpMethod.Put, $"/auth-requests/{id}", request, true, true);
+        }
+
+        #endregion
+
         #region Helpers
 
         public async Task<string> GetActiveBearerTokenAsync()

src/Core/Services/AuthService.cs

@@ -1,11 +1,13 @@
 using System;
 using System.Collections.Generic;
+using System.Text;
 using System.Threading.Tasks;
 using Bit.Core.Abstractions;
 using Bit.Core.Enums;
 using Bit.Core.Exceptions;
 using Bit.Core.Models.Domain;
 using Bit.Core.Models.Request;
+using Bit.Core.Models.Response;
 using Bit.Core.Utilities;
 
 namespace Bit.Core.Services
@@ -468,5 +470,20 @@ namespace Bit.Core.Services
             TwoFactorProvidersData = null;
             SelectedTwoFactorProviderType = null;
         }
+
+        public async Task<PasswordlessLoginResponse> GetPasswordlessLoginRequestByIdAsync(string id)
+        {
+            return await _apiService.GetAuthRequestAsync(id);
+        }
+
+        public async Task<PasswordlessLoginResponse> PasswordlessLoginAsync(string id, string pubKey, bool requestApproved)
+        {
+            var publicKey = CoreHelpers.Base64UrlDecode(pubKey);
+            var masterKey = await _cryptoService.GetKeyAsync();
+            var encryptedKey = await _cryptoService.RsaEncryptAsync(masterKey.EncKey, publicKey);
+            var encryptedMasterPassword = await _cryptoService.RsaEncryptAsync(Encoding.UTF8.GetBytes(await _stateService.GetKeyHashAsync()), publicKey);
+            var deviceId = await _appIdService.GetAppIdAsync();
+            return await _apiService.PutAuthRequestAsync(id, encryptedKey.EncryptedString, encryptedMasterPassword.EncryptedString, deviceId, requestApproved);
+        }
     }
 }

src/Core/Services/StateService.cs

@@ -7,6 +7,7 @@ using Bit.Core.Abstractions;
 using Bit.Core.Enums;
 using Bit.Core.Models.Data;
 using Bit.Core.Models.Domain;
+using Bit.Core.Models.Response;
 using Bit.Core.Models.View;
 using Bit.Core.Utilities;
 
@@ -1260,6 +1261,37 @@ namespace Bit.Core.Services
             await SetValueAsync(key, value, reconciledOptions);
         }
 
+        public async Task<bool> GetApprovePasswordlessLoginsAsync(string userId = null)
+        {
+            var reconciledOptions = ReconcileOptions(new StorageOptions { UserId = userId },
+                await GetDefaultStorageOptionsAsync());
+            var key = Constants.ApprovePasswordlessLoginsKey(reconciledOptions.UserId);
+            return await GetValueAsync<bool?>(key, reconciledOptions) ?? false;
+        }
+
+        public async Task SetApprovePasswordlessLoginsAsync(bool? value, string userId = null)
+        {
+            var reconciledOptions = ReconcileOptions(new StorageOptions { UserId = userId },
+                await GetDefaultStorageOptionsAsync());
+            var key = Constants.ApprovePasswordlessLoginsKey(reconciledOptions.UserId);
+            await SetValueAsync(key, value, reconciledOptions);
+        }
+
+        public async Task<PasswordlessRequestNotification> GetPasswordlessLoginNotificationAsync(string userId = null)
+        {
+            var reconciledOptions = ReconcileOptions(new StorageOptions { UserId = userId },
+                await GetDefaultStorageOptionsAsync());
+            var key = Constants.PasswordlessLoginNofiticationKey(reconciledOptions.UserId);
+            return await GetValueAsync<PasswordlessRequestNotification>(key, reconciledOptions);
+        }
+
+        public async Task SetPasswordlessLoginNotificationAsync(PasswordlessRequestNotification value, string userId = null)
+        {
+            var reconciledOptions = ReconcileOptions(new StorageOptions { UserId = userId },
+                await GetDefaultStorageOptionsAsync());
+            var key = Constants.PasswordlessLoginNofiticationKey(reconciledOptions.UserId);
+            await SetValueAsync(key, value, reconciledOptions);
+        }
         // Helpers
 
         private async Task<T> GetValueAsync<T>(string key, StorageOptions options)
@@ -1455,6 +1487,7 @@ namespace Bit.Core.Services
             await SetEncryptedPasswordGenerationHistoryAsync(null, userId);
             await SetEncryptedSendsAsync(null, userId);
             await SetSettingsAsync(null, userId);
+            await SetApprovePasswordlessLoginsAsync(null, userId);
 
             if (userInitiated)
             {
@@ -1474,6 +1507,7 @@ namespace Bit.Core.Services
                 await SetAutoDarkThemeAsync(null, userId);
                 await SetAddSitePromptShownAsync(null, userId);
                 await SetPasswordGenerationOptionsAsync(null, userId);
+                await SetApprovePasswordlessLoginsAsync(null, userId);
                 await SetUsernameGenerationOptionsAsync(null, userId);
             }
         }

src/iOS.Core/Services/DeviceActionService.cs

@@ -643,5 +643,11 @@ namespace Bit.iOS.Core.Services
                 _deviceActionService.PickedDocument(url);
             }
         }
+
+        public void OpenAppSettings()
+        {
+            var url = new NSUrl(UIApplication.OpenSettingsUrlString);
+            UIApplication.SharedApplication.OpenUrl(url);
+        }
     }
 }

src/iOS/AppDelegate.cs

@@ -16,6 +16,7 @@ using Bit.iOS.Services;
 using CoreNFC;
 using Foundation;
 using UIKit;
+using UserNotifications;
 using Xamarin.Forms;
 using Xamarin.Forms.Platform.iOS;
 
@@ -56,7 +57,6 @@ namespace Bit.iOS
             LoadApplication(new App.App(null));
             iOSCoreHelpers.AppearanceAdjustments();
             ZXing.Net.Mobile.Forms.iOS.Platform.Init();
-
             _broadcasterService.Subscribe(nameof(AppDelegate), async (message) =>
             {
                 try

src/iOS/Services/iOSPushNotificationHandler.cs

@@ -83,7 +83,6 @@ namespace Bit.iOS.Services
         public void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
         {
             Debug.WriteLine($"{TAG} WillPresentNotification {notification?.Request?.Content?.UserInfo}");
-
             OnMessageReceived(notification?.Request?.Content?.UserInfo);
             completionHandler(UNNotificationPresentationOptions.Alert);
         }

src/iOS/Services/iOSPushNotificationService.cs

@@ -1,6 +1,10 @@
-using System.Diagnostics;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
 using System.Threading.Tasks;
 using Bit.App.Abstractions;
+using Bit.Core.Services;
 using Foundation;
 using UIKit;
 using UserNotifications;
@@ -19,6 +23,12 @@ namespace Bit.iOS.Services
 
         public bool IsRegisteredForPush => UIApplication.SharedApplication.IsRegisteredForRemoteNotifications;
 
+        public async Task<bool> AreNotificationsSettingsEnabledAsync()
+        {
+            var settings = await UNUserNotificationCenter.Current.GetNotificationSettingsAsync();
+            return settings.AlertSetting == UNNotificationSetting.Enabled;
+        }
+
         public async Task RegisterAsync()
         {
             Debug.WriteLine($"{TAG} RegisterAsync");
@@ -58,5 +68,39 @@ namespace Bit.iOS.Services
             NSUserDefaults.StandardUserDefaults.Synchronize();
             return Task.FromResult(0);
         }
+
+        public void SendLocalNotification(string title, string message, string notificationId)
+        {
+            if (string.IsNullOrEmpty(notificationId))
+            {
+                throw new ArgumentNullException("notificationId cannot be null or empty.");
+            }
+
+            var content = new UNMutableNotificationContent()
+            {
+                Title = title,
+                Body = message
+            };
+
+            var request = UNNotificationRequest.FromIdentifier(notificationId, content, null);
+            UNUserNotificationCenter.Current.AddNotificationRequest(request, (err) =>
+            {
+                if (err != null)
+                {
+                    Logger.Instance.Exception(new Exception($"Failed to schedule notification: {err}"));
+                }
+            });
+        }
+
+        public void DismissLocalNotification(string notificationId)
+        {
+            if (string.IsNullOrEmpty(notificationId))
+            {
+                return;
+            }
+
+            UNUserNotificationCenter.Current.RemovePendingNotificationRequests(new string[] { notificationId });
+            UNUserNotificationCenter.Current.RemoveDeliveredNotifications(new string[] { notificationId });
+        }
     }
 }