I agree that in a way, this would only intensify effects of camera-equipped cellphones. I have a pet theory that ever-present camera-phones are responsible for

I agree that in a way, this would only intensify effects of camera-equipped cellphones. I have a pet theory that ever-present camera-phones are responsible for at least some of the drop in crime in the last decade. And while the controversy has gone away, there were a lot of overblown concerns about "camera-phones in locker rooms" in the early 00's. The difference is speed. You'd always have a camera aimed at whatever you were looking at. If you saw a mugger grab a purse, you might not have the presence of mind to fumble with your phone, but you might be able to press a button or say "take picture" (or whatever). I'd imagine that a decrease in response time could be a real deterrent. I know there've been spy cams forever, but I'd argue that merely owning one (let alone openly displaying it) would mark you for suspicion among a lot of people and I don't think they're widely used. I'm not saying it's the end of the world, but there are some new privacy norms that will be established if these are to take off.