I really like how much effort they put in to make things as natural and unintruive as possible. The article mentionned there's no interaction yet; I wonder if

I really like how much effort they put in to make things as natural and unintruive as possible. The article mentionned there's no interaction yet; I wonder if they could track eyeball movement and use eye blinks for clicking. (Someone else mentionned a ring as an input device which is also an excellent idea.)