Tag suggestion settings control allows the user's friends to tag you in the pictures or videos. In 2017, Facebook introduced the face recognition feature where it suggests options for whom to tag in the image that provided an easy method of face recognition. The notification about tag suggestions is seen in the News Feed. To know how to tag on facebook, type the name on the post or comment, type the name of the user to tag and post it.
Recently, Facebook announced that it is phasing out the facial recognition suggestion feature which has been named in the response to the complaint where over 30 million people did not get information about their ability to disable it. Some users feel it can help in finding missing children (or adults) and for catching criminals and they want it to be regulated but not completely banned.