How to lock your WhatsApp chats with fingerprints?

Over a few past months, WhatsApp has rolled out a slew of updates on both Android and iOS platforms. But these updates are mostly restricted to the beta versions, which means only a handful of users who are a part of the developer beta programme on both Android and iOS platforms are able to use the features available under these updates.
Currently, WhatsApp lock for Touch ID and Face ID are available to the users in the stable channel while the same feature is under the beta programme for Android users. Here’s how you can secure your chats on both the platforms to stop any possible snooping by people who would just randomly open your WhatsApp chats and pry into your private life.
On Android:
- Jump to the WhatsApp Settings on your Android phone. The WhatsApp version you should be using is 2.19.221.
- Go to Account section now
- Now, tap on Privacy and scroll to the last option, which is Fingerprint lock
- Tap on it and enable it on your phone. You will be asked to confirm that you want to use your phone’s fingerprint sensor to lock/unlock WhatsApp by tapping your registered finger once on the sensor
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