[knorby]

There is again absolutely no difference between phones and glass in this regard... Android phones now have trigger word detection ("OK Google") available as well, which is all that glass did. Again like a phone, the camera is only on when triggered.

The only real difference is positioning, but you can hold a phone up, and most people won't notice.

[marshray]

Why don't you go spend a day with your cellphone taped to your forehead recording video and see how many people notice?