Facebook-owned WhatsApp is working on fingerprint authentication feature to protect its users' chats from being seen by others. Once this authentication is enabled, users will have to use the fingerprint feature for opening the application. According to the report by WABetaInfo, WhatsApp has rolled out their beta version numbered Android 2.19.3 update in which it has provided the new authentication feature for Android users. WhatsApp has also added some new features for iOS users which includes the option to add personal stickers, replay privately, 3D Touch action for Status, Group Stickers management and many more. These features are all available with the WhatsApp beta update for iOS 2.19.10.21 for all public beta users.

WhatsApp currently deploys end to end encryption, to protect the privacy of a user's messages. However, with the new fingerprint authentication, users will be able to easily lock the app and prevent messages, photos, videos, voice messages, documents, status updates from falling into the wrong hands.