Chat, IM and WhatsApp protect users' data by adding new features in this framework.
The announced feature is new for Android phone users, but it is not for iOS users because it was launched last February, and it comes to the feature of locking and unlocking WhatsApp application by fingerprint on Android.
The new feature is included in the new update from WhatsApp, and the user should activate it by entering the general settings and then choose the account settings, and choose the privacy setting and then finally activate the fingerprint feature, as shown in the picture.
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