Support Face ID

diff --git a/ios/Runner/Info.plist b/ios/Runner/Info.plist
index 882a2f3..2b50fb8 100644
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -82,5 +82,7 @@
 	</array>
 	<key>NSCameraUsageDescription</key>
 	<string>We need access to your camera to scan QR codes for connection and wallet addresses.</string>
+	<key>NSFaceIDUsageDescription</key>
+	<string>We use Face ID to unlock your wallet without typing your password.</string>
 </dict>
 </plist>
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 127f9d5..2d35090 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -157,6 +157,8 @@
   "unlockButton": "Unlock",
   "unlockReason": "Unlock Wallet",
   "unlockUnableToAuthError": "Unable to authenticate.",
+  "unlockWithFaceId": "Unlock with Face ID",
+  "unlockWithTouchId": "Unlock with Touch ID",
   "unlockTitle": "Unlock Wallet",
   "unlockDescription": "Enter your wallet password to unlock",
   "unlockPasswordLabel": "Password",
diff --git a/lib/l10n/app_localizations.dart b/lib/l10n/app_localizations.dart
index 0852711..63aae65 100644
--- a/lib/l10n/app_localizations.dart
+++ b/lib/l10n/app_localizations.dart
@@ -867,6 +867,18 @@ abstract class AppLocalizations {
   /// **'Unable to authenticate.'**
   String get unlockUnableToAuthError;
 
+  /// No description provided for @unlockWithFaceId.
+  ///
+  /// In en, this message translates to:
+  /// **'Unlock with Face ID'**
+  String get unlockWithFaceId;
+
+  /// No description provided for @unlockWithTouchId.
+  ///
+  /// In en, this message translates to:
+  /// **'Unlock with Touch ID'**
+  String get unlockWithTouchId;
+
   /// No description provided for @unlockTitle.
   ///
   /// In en, this message translates to:
diff --git a/lib/l10n/app_localizations_en.dart b/lib/l10n/app_localizations_en.dart
index 0a3a522..ad012c5 100644
--- a/lib/l10n/app_localizations_en.dart
+++ b/lib/l10n/app_localizations_en.dart
@@ -422,6 +422,12 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get unlockUnableToAuthError => 'Unable to authenticate.';
 
+  @override
+  String get unlockWithFaceId => 'Unlock with Face ID';
+
+  @override
+  String get unlockWithTouchId => 'Unlock with Touch ID';
+
   @override
   String get unlockTitle => 'Unlock Wallet';
 
diff --git a/lib/l10n/app_localizations_pt.dart b/lib/l10n/app_localizations_pt.dart
index 5502e79..d7da9a9 100644
--- a/lib/l10n/app_localizations_pt.dart
+++ b/lib/l10n/app_localizations_pt.dart
@@ -422,6 +422,12 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get unlockUnableToAuthError => 'Não foi possível autenticar.';
 
+  @override
+  String get unlockWithFaceId => 'Desbloquear com Face ID';
+
+  @override
+  String get unlockWithTouchId => 'Desbloquear com Touch ID';
+
   @override
   String get unlockTitle => 'Desbloquear Carteira';
 
diff --git a/lib/l10n/app_pt.arb b/lib/l10n/app_pt.arb
index 1a8a4e3..c9161ad 100644
--- a/lib/l10n/app_pt.arb
+++ b/lib/l10n/app_pt.arb
@@ -157,6 +157,8 @@
   "unlockButton": "Desbloquear",
   "unlockReason": "Desbloquear carteira",
   "unlockUnableToAuthError": "Não foi possível autenticar.",
+  "unlockWithFaceId": "Desbloquear com Face ID",
+  "unlockWithTouchId": "Desbloquear com Touch ID",
   "unlockTitle": "Desbloquear Carteira",
   "unlockDescription": "Digite a senha da sua carteira para desbloquear",
   "unlockPasswordLabel": "Senha",
diff --git a/lib/screens/unlock.dart b/lib/screens/unlock.dart
index a37bd05..5998201 100644
--- a/lib/screens/unlock.dart
+++ b/lib/screens/unlock.dart
@@ -1,6 +1,7 @@
 import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
+import 'package:local_auth/local_auth.dart';
 
 import 'package:skylight_wallet/l10n/app_localizations.dart';
 import 'package:skylight_wallet/wallet_core_glue.dart';
@@ -22,11 +23,36 @@ class _UnlockScreenState extends State<UnlockScreen> {
   bool _obscure = true;
   bool _isLoading = false;
   String? _error;
+  String? _biometricLabel; // resolved per device on iOS (Face ID vs Touch ID)
+  bool _started = false;
 
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
-    if (!_isDesktop) _promptUnlock();
+    // Guarded: didChangeDependencies re-fires whenever an inherited dependency
+    // changes -- a locale or theme flip, for instance -- and _promptUnlock
+    // reads Localizations. Without this the biometric sheet is raised a second
+    // time on top of the first, which iOS resolves by cancelling both.
+    if (_started || _isDesktop) return;
+    _started = true;
+    _resolveBiometricLabel();
+    _promptUnlock();
+  }
+
+  /// iOS labels the affordance by the device's biometric (Face ID / Touch ID);
+  /// Android and desktop keep the generic "Unlock".
+  Future<void> _resolveBiometricLabel() async {
+    if (!Platform.isIOS) return;
+    final i18n = AppLocalizations.of(context)!;
+    try {
+      final types = await LocalAuthentication().getAvailableBiometrics();
+      final label = types.contains(BiometricType.face)
+          ? i18n.unlockWithFaceId
+          : i18n.unlockWithTouchId;
+      if (mounted) setState(() => _biometricLabel = label);
+    } catch (_) {
+      // Leave the generic label.
+    }
   }
 
   @override
@@ -93,6 +119,7 @@ class _UnlockScreenState extends State<UnlockScreen> {
       onToggleObscure: () => setState(() => _obscure = !_obscure),
       error: _error,
       loading: _isLoading,
+      biometricLabel: _biometricLabel,
       onUnlockPassword: _unlockWithPassword,
       onUnlockBiometric: _promptUnlock,
     );