Yes, but you need more than one face. An average face doesn't much look like any particular person. You'd need maybe a few hundred faces. Facial matching usual

Yes, but you need more than one face. An average face doesn't much look like any particular person. You'd need maybe a few hundred faces. Facial matching usually reduces search space by assuming something about the input. I.e. you don't match a face against the whole world, just the friends of a person uploading a photo. Otherwise you'd run into matching a similar face to some stranger on the other side of the world.