How to Activate Face ID, Touch ID Biometric Authentication on iOS
WhatsApp for iPhone has received an important update through build version 2.19.20. The latest update brings the anticipated biometric authentication that allows users to lock the WhatsApp on their iPhone models by deploying the native Face ID or Touch ID.
How to use Face ID, Touch ID on WhatsApp
With the latest WhatsApp update, you can lock the WhatsApp app with Face ID or Touch ID by going to Settings > Account > Privacy > Screen Lock. Once you moved to the Screen Lock screen, the app shows the available authentication method - either Face ID or Touch ID - that you can enable to lock your WhatsApp. You can also choose whether you want the biometric authentication requirement immediately or after an interval of a minute, 15 minutes, or an hour.