It might still work if it could narrow down the possibilities to, say, a hundred photos or less. The user should be able to go the "last mile" and pick out the

It might still work if it could narrow down the possibilities to, say, a hundred photos or less. The user should be able to go the "last mile" and pick out the one they're looking for. I'd be curious to see if Facebook's facial recognition technology is this good. Also, lots of people out in public (especially in NYC) aren't necessarily residents of the given area, which potentially makes this much harder.