Nobody here is talking about all the sensors and cameras this thing has and how easily it can be used for unsolicited audio/video recording? For me this is the biggest reason why Google Glass and other such projects never took off.
I don't think its comparable. phone cameras are assumed to be off, its pretty obvious when someone is recording a video, because he has to hold the phone in a very uncomfortable position.
Unless someone is actively pointing their phone at you, you can reasonably assume you're not being filmed.
this thing, on the other hand, is supposed to be on all the time. So having your head pointed in someone's general direction is going to be interpreted as "actively filming that person".
This could easily lead to getting punched in the face.
they will probably be discouraged in the workplace too. no one wants to be dealing with a sexual harassment case, just because someone didnt pay attention to the direction his head was pointing in, while reading some random article on his glasses' internal screen.
