> they cannot do this for stuff that has already been stored. That's a very simple software update. Every year iOS gets more images the automatic tagging supp

> they cannot do this for stuff that has already been stored. That's a very simple software update. Every year iOS gets more images the automatic tagging supports (dogs, shoes, bridges, etc). And if you add a friend's face to known faces, it'll go and search every other photo for that face. It sounds absolutely trivial to re-scan when the hash DB gets updated.