[lehrblogger]

Yeah, I understand. I was speculating about possible changes to social norms and body postures in response to recording technology like Glass. As an alternative to an indicator light, maybe Glass-wearers will learn not to look at other people at all, so as not to give the impression that they are recording. Similarly, perhaps there are ways that we held our pre-camera cell phones that would now imply recording, so we've all subconsciously learned to hold our new phones differently.

In other words, it could be a lack of obvious physical gestures that indicates we are not recording, rather than the presence of obvious physical gestures that indicate we are recording.

A world in which we don't 'point' our heads at strangers is definitely weird and possibly undesirable, but interesting to think about.