I can see a lot of these fake smiley/happy people wearing these things getting punched in the face for very trivial if any reason at all. Furthermore, I suspect theft of these devices will be rampant, and "forgetting" your glasses or losing them someplace even more common.And, to be honest, I'm going to just start wearing a mask everywhere I go, because my face belongs to me goddamit, and nobody has any rights to it. I don't want anyone smiling at me, wearing Google glasses and some craptacular software is analyzing my face, and giving the viewer all sorts of info in a HUD. Efff This !!!