Google is enhancing notification management for locked applications in Android 17. Notifications from apps secured by the built-in app lock feature will be visible on the lock screen or as a bubble, but the content will remain concealed until the app is unlocked. This includes apps like WhatsApp, where a new message notification will appear without revealing the message details. The native App Lock API is in development, aiming to provide a system-level solution for locking individual applications, potentially eliminating the need for third-party apps. The feature may require biometric authentication for access and is expected to standardize privacy controls across the platform, particularly benefiting apps that handle sensitive information. Android 17 may debut with this native app-locking system for Pixel smartphones and other devices using the stock version of the OS.