Facebook preparing to launch such a feature, in order to keep the account secure, your identity replaced by your face instead of the phone number or email id. Most of the usage can be done at the time of account recovery.
With this you will be able to prove by showing your face in a very short time that the account you logged in is yours. This optional feature will be available only on devices that you have used to log in to Facebook ID before.
It known that in the event of forgiveness of the password or account lock before, there many ways for account recovery on Facebook. Many times Facebook identifies users by sending code to friends and then the account unlocked.
This process takes quite a long time. That’s why the project launch a video chat device in May 2018 by the name ‘Aloha’. It easily identify the face of the user. However, those using this feature feared that in this case the networking site does not start detecting them.