These technologies will also allow the creepees to monitor the creepers. If someone's taking a rather candid photograph of you, your recording apparatus will also be running, so you can out them. The technology can be used for good (recording acts of oppression, for journalism?) or bad (voyeurism, shaming, the usual police state crap). Russia has dashboard cameras, perhaps we can expect something similar elsewhere. Cyclists have benefited in the past from wearable cameras, when recording dangerous drivers, etc. It will be interesting to compare how people react to this, compared with CCTV (which already offers a ridiculous level of surveillance, especially in the UK where I live). Would you be more bothered by the person sitting next to you on the bus filming you with a hidden camera, or a dumb black hemisphere on the ceiling taping you? We've managed so far to avoid confronting the problem of defining privacy, since the surveillance has happened at an impersonal level - all of the cameras in public can be justified by "crime prevention". But when everyone has a hidden camera, what will we call it? Voyeurism? Sousveillance? Journalism?
Will they really though? Let's pretend this technology hits smartphone levels. Its suddenly everywhere. How do you know if the person takes a picture or is just looking? Will that be the new social interaction, a world where you constantly check for subtle clues that a person is recording you? What if you aren't facing them? What if you're not thinking about it? There's so many new developments that brings up. The smartphone changed how we worked; the 9-5 day died with the smartphone and now you no longer have isolation in the social sense. So what happens when we can no longer escape the job of behaving "properly." The dumb hemisphere doesn't judge you. I've worked those shitty jobs. Nobody behind that camera cares about you, but if its attached to someone's face? They care a whole lot. I'm not arguing against Google Glass. Hell, i'll buy one. If its safe i'll also probably use it for less than legal purposes. But there are changes that come from a society with perfect memory, and they're so vast and complex its hard to understand.