[ceejayoz]

Facebook'll do it for you. Create a profile, upload a few photos of the subject, and they may start alerting you that you've been tagged in others' photos.

https://www.facebook.com/help/122175507864081

> Here are some examples of how Facebook may use face recognition:

> Let you know when you might appear in photos or videos but haven't been tagged.

[lozenge]

The false positives on that would be insane, they must only check friends (maybe also friends of tagged users)

[ceejayoz]

I've had it come up from friends-of-friends, at least.

A good investigator is likely gonna find that a few friends-of-friends of the "deceased" play Mafia Wars and accept every friend request.