> which means that Facebook has enough pictures of me to identify me in random pictures (even though I never uploaded a single one myself). Facebook probably u

> which means that Facebook has enough pictures of me to identify me in random pictures (even though I never uploaded a single one myself). Facebook probably uses more than just facial recognition, it can also use the metadata. They know who uploaded it, so they can narrow down the "list of candidate faces" from 7 billion to the much smaller number of people your friend knows/tags people in photos.