The old feature enabled users to choose whether Facebook could suggest that their friends tag them in photos, without giving them control over other uses of the technology. The face recognition setting, available to some Facebook users since December 2017, has additional functions such as notifying account holders if their profile photo is used by someone else. Facebook’s face recognition technology has been at the center of a privacy related lawsuit since 2015.
source https://finance.yahoo.com/news/1-facebook-brings-face-recognition-213306456.html?.tsrc=rss