Google has introduced the Android 17 QPR2 Beta 3 update, featuring a new "App Lock" option for enhanced security on Pixel devices. Users can activate App Lock by long-pressing an app icon and selecting the option from the menu. This feature requires a fingerprint, facial recognition, or a designated pattern to access locked apps, adding a layer of protection for personal data. When enabled, notifications from locked apps are hidden, and associated widgets or shortcuts are removed from view. Users can manage App Lock settings within the settings menu, allowing them to toggle the feature on or off for individual apps.