Comment Re:not private (Score 2) 128
The exception here is if it's an event, or if the individual is behaving in such a way where they are making a spectacle out of themselves. Then, there's an expectation that you might be filmed if you're participating, and you don't have the right to demand your likeness not be published / broadcast.
However, just walking down the street doesn't qualify, and that's where Google Glass gets into trouble since most states expect that if you do take a picture of someone who isn't aware they're being photographed, and don't get their permission, you must obscure or discard their likeness, and essentially ignore their existence (for example, not look them up on-line). Obviously Google Glass is far less useful if it suffers from legally obligatory amnesia.