"But how close do you have to get to use that 3D capability?" With a Lytro camera you could do it from just about any distance. "but that’s hardly someone wal

"But how close do you have to get to use that 3D capability?" With a Lytro camera you could do it from just about any distance. "but that’s hardly someone walking down the street and you getting a quick grab of their face." All you have to do is even look remotely interested in your phone and pretend you're not taking a picture - boom info gotten surreptitiously. That's assuming the other person you're copying biometrics from is even paying attention - odds are they're probably too focused on their own phone to notice.