I don't think the significance of this can be understated. Two reasons: One, I think the act of pulling something off of someone's face is a lot different from

I don't think the significance of this can be understated. Two reasons: One, I think the act of pulling something off of someone's face is a lot different from pulling something out of someone's hand. It's subtle on the surface, but crossing that kind of social boundary on a regular enough basis could be exactly the tipping point that turns public opinion against law enforcement on a broad scale. Two, as the technology and form factor mature, it'll simply be harder to tell whether something is/contains a camera or not.