If you disable this option, you would be able to reply to messages from the notification bar and even accept or decline WhatsApp calls without having to punch in your biometrics.
I am not over the moon that I gave my fingerprints to my Android Device under the protection of Google; but I like unlocking my phone quickly, and Google did promise that one time not to be evil.
On the same day that we got to know that Google is enhancing the security experience on Android by allowing users to log in using their set local biometric credentials like fingerprints, version 2.19.221 of WhatsApp also started rolling out to those who've registered to beta-test Facebook's popular messaging app. As per the new report, the company has finally introduced the above mentioned feature in the latest Beta version of the Messenger application.
In case you're interested in trying out the new feature, you can do so by going over to Settings Account Privacy and toggling on the "Fingerprint Lock" option. That being said, it does bring in some bugs, but a lot of them won't be noticed. Believed to have been spotted first by WABetaInfo, the new feature is said to be available on WhatsApp Beta v2.19.221, but only on devices running Android Marshmallow or above. There's also a new "show content in notifications" option added allowing users to decide if they want to show or hide message and sender preview when the fingerprint lock is enabled.More news: Olive Garden announces never ending ‘Lifetime Pasta Pass’
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You can also choose how long the app should stay unlocked once you open it.
Upon enabling, they can choose to "automatically lock" WhatsApp "immediately", "after 1 minute" or "after 30 minutes" of inactivity.
The feature can be found in WhatsApp Settings, which is disabled by default.
WABetainfo WABetainfo also says that Whatsapp is now working on the "Dark mode" feature and will roll it out in the coming three months.