WhatsApp is anticipated to launch its lock chat feature in which users will be able to select particular individual and group conversations to hide behind an extra layer of security that can only be accessed with the user's fingerprint or passcode. The Meta-owned instant messaging service is reported to be working on a new privacy feature that could one day allow you to "click" particular conversations so that someone who borrows your phone cannot access them without your permission.

The function is present in WhatsApp beta version 2.23.8.2, according to the WhatsApp update website WABetainfo (for Android). Users would be able to "lock chats and keep them hidden" thanks to the reportedly available feature, which is presently being developed internally and is not yet available. 

If this feature is activated, locked messages should not be viewable in the notification tray as well. If someone attempts to open a locked message, they may be asked to clear the chat first. Locking a chat will also secure any images or videos shared within it, preventing them from by default appearing in your phone's gallery.