diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 118db43..d9d49b3 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -32,6 +32,11 @@
 
         </activity>
 
+        <activity
+            android:name="com.cyb3rko.backpack.activities.BackpackAuthenticationActivity"
+            android:exported="false"
+            android:fitsSystemWindows="true" />
+
         <activity
             android:name="com.cyb3rko.pincredible.SettingsActivity"
             android:parentActivityName=".MainActivity"
diff --git a/app/src/main/kotlin/com/cyb3rko/pincredible/MainActivity.kt b/app/src/main/kotlin/com/cyb3rko/pincredible/MainActivity.kt
index eae071f..8300fa2 100644
--- a/app/src/main/kotlin/com/cyb3rko/pincredible/MainActivity.kt
+++ b/app/src/main/kotlin/com/cyb3rko/pincredible/MainActivity.kt
@@ -18,6 +18,7 @@ package com.cyb3rko.pincredible
 
 import android.os.Bundle
 import androidx.navigation.findNavController
+import androidx.viewbinding.ViewBinding
 import com.cyb3rko.backpack.activities.BackpackMainActivity
 import com.cyb3rko.backpack.interfaces.BackpackMain
 import com.cyb3rko.pincredible.databinding.ActivityMainBinding
@@ -30,12 +31,12 @@ class MainActivity : BackpackMainActivity(), BackpackMain {
         super.onCreate(savedInstanceState)
         Thread.setDefaultUncaughtExceptionHandler(ExceptionHandler(this))
         binding = ActivityMainBinding.inflate(layoutInflater).asContentView()
+        findNavController(R.id.nav_host_fragment_content_main).apply()
         bindInterface(this)
     }
 
-    override fun onPostCreate(savedInstanceState: Bundle?) {
-        super.onPostCreate(savedInstanceState)
-        findNavController(R.id.nav_host_fragment_content_main).applyToActionBar()
+    override fun getBinding(): ViewBinding {
+        return binding
     }
 
     override fun getToolbar(): MaterialToolbar {
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 7beb419..b5468f3 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -5,6 +5,14 @@
     <PreferenceCategory
         app:title="@string/preference_category_security">
 
+        <SwitchPreferenceCompat
+            app:key="app_lock"
+            app:defaultValue="false"
+            app:singleLineTitle="false"
+            app:title="@string/preference_item_app_lock"
+            app:summary="@string/preference_item_app_lock_summary"
+            app:icon="@drawable/colored_ic_biometry" />
+
         <SwitchPreferenceCompat
             app:key="button_randomizer"
             app:defaultValue="false"