Here’s how you can enable fingerprint lock in WhatsApp:
- Open WhatsApp.
- Tap three vertical dots at the top right.
- In the menu, tap Settings which you can find beneath Starred messages.
- Hit Account > Privacy.
- Under Blocked contacts, you can see the Fingerprint lock option. Hit it.
- Hit Unlock with fingerprint option. Confirm your fingerprint.
That’s it. You’ve enabled fingerprint lock successfully, and from now on, you need to provide the fingerprint to open WhatsApp.
Remember that you can answer WhatsApp calls even if the WhatsApp is locked.
Also, change the duration of automatic lock and disable Show content in notifications option, if you wish.
If you want to disable fingerprint lock, tap the Unlock with fingerprint option.