Android Authority

Android 17 may finally add the native App Lock feature Pixel users have been waiting for

Google may be working on a native App Lock feature for Android 17 that lets users secure specific apps without the restrictions of Private Space. This new API allows the default launcher to lock apps, ...
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WhatsApp chat lock: How to secure private chats on Android and iPhone?

WhatsApp Chat Lock adds extra privacy by securing individual chats with fingerprint, Face ID, or PIN on Android and iPhone.

Android Automotive will let you PIN-lock apps to keep them private from passengers

Google’s new Sensitive App Protection feature for Android Automotive lets you PIN-lock specific apps to hide them from passengers.