Login via fingerprint to WhatsApp is an option that should be enabled in the settings. After clicking on the menu Settings go to section Accountand then select Privacy (strangely not Security). Here you must select a submenu Lock by fingerprint, and in the next window activate this function.
After activating the lock, you will provide your fingerprint pattern and specify like WhatsApp will block access to the program after screen blanking. You can choose an immediate lock after 1 minute or 30 minutes after giving the fingerprint. An additional option is to specify whether notifications should show the sender and the content of the message.
You can download the free WhatsApp messenger for Android via our application database.