current stand

app/build.gradle

@@ -146,4 +146,6 @@ dependencies {
 
 
     implementation "com.valentinilk.shimmer:compose-shimmer:1.2.0"
+
+    implementation "androidx.biometric:biometric-ktx:1.2.0-alpha05"
 }

app/src/main/AndroidManifest.xml

@@ -24,6 +24,8 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CAMERA" />
 
+    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+
     <application
         android:name=".UpdateSettingsApp"
         android:allowBackup="true"

app/src/main/java/app/myzel394/alibi/db/AppSettings.kt

@@ -1,11 +1,14 @@
 package app.myzel394.alibi.db
 
 import android.content.Context
+import android.content.Intent
 import android.media.MediaRecorder
 import android.os.Build
-import androidx.camera.video.FileOutputOptions
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricManager.Authenticators
 import androidx.camera.video.Quality
 import androidx.camera.video.QualitySelector
+import androidx.core.app.ActivityCompat.startActivityForResult
 import app.myzel394.alibi.R
 import app.myzel394.alibi.helpers.AudioBatchesFolder
 import app.myzel394.alibi.helpers.VideoBatchesFolder
@@ -547,3 +550,19 @@ data class NotificationSettings(
         )
     }
 }
+
+@Serializable
+class AppLockSettings {
+    val isEnabled
+        get() = true
+
+    companion object {
+        fun getDefaultInstance(): AppLockSettings = AppLockSettings()
+
+        fun isSupported(context: Context): Boolean {
+            val biometricManager = BiometricManager.from(context)
+            when (biometricManager.canAuthenticate(Authenticators.BIOMETRIC_STRONG or Authenticators.DEVICE_CREDENTIAL)) {
+
+            }
+    }
+}

app/src/main/java/app/myzel394/alibi/ui/Navigation.kt

@@ -1,8 +1,16 @@
 package app.myzel394.alibi.ui
 
 import android.content.Context
+import android.hardware.biometrics.BiometricManager.Authenticators.BIOMETRIC_STRONG
+import android.hardware.biometrics.BiometricManager.Authenticators.DEVICE_CREDENTIAL
+import android.hardware.biometrics.BiometricPrompt
+import android.hardware.biometrics.BiometricPrompt.CryptoObject
 import android.hardware.camera2.CameraCharacteristics
 import android.hardware.camera2.CameraManager
+import android.os.Build
+import android.os.CancellationSignal
+import android.widget.Button
+import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.camera.core.CameraX
 import androidx.compose.animation.core.tween
@@ -20,10 +28,12 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.core.content.ContextCompat
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
+import app.myzel394.alibi.R
 import app.myzel394.alibi.dataStore
 import app.myzel394.alibi.db.AppSettings
 import app.myzel394.alibi.ui.enums.Screen
@@ -61,6 +71,39 @@ fun Navigation(
         }
     }
 
+    LaunchedEffect(Unit) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            val executor = ContextCompat.getMainExecutor(context)
+            val promptInfo = BiometricPrompt.Builder(context)
+                .setTitle("Biometric login for my app")
+                .setSubtitle("Log in using your biometric credential")
+                .setAllowedAuthenticators(
+                    BIOMETRIC_STRONG or DEVICE_CREDENTIAL
+                )
+                .build()
+
+            // Prompt appears when user clicks "Log in".
+            // Consider integrating with the keystore to unlock cryptographic operations,
+            // if needed by your app.
+            promptInfo.authenticate(
+                CancellationSignal(),
+                executor,
+                object : BiometricPrompt.AuthenticationCallback() {
+                    override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
+                        super.onAuthenticationError(errorCode, errString)
+                    }
+
+                    override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
+                        super.onAuthenticationSucceeded(result)
+                    }
+
+                    override fun onAuthenticationFailed() {
+                        super.onAuthenticationFailed()
+                    }
+                })
+        }
+    }
+
     LaunchedEffect(settings.theme) {
         if (!SUPPORTS_DARK_MODE_NATIVELY) {
             val currentValue = AppCompatDelegate.getDefaultNightMode()