In 2011, Facebook enrolled all Facebook subscribers into its facial recognition program without asking anyone. When a user uploads photos, the software recognizes the faces, tags them, and creates a record of that perso Later, users can retrieve all photos n/photo. containing an image of a specific friend. Any existing friend can be tagged, and the soft ware suggests the names of friends to tag when you upload the photos. This too raised the privacy alarm, forcing Facebook to make it easier for users to opt out.