That is an interesting advertisement. I am more interested in reality though. There are some difficulties like head tracking for instance that would be hard t

That is an interesting advertisement. I am more interested in reality though. There are some difficulties like head tracking for instance that would be hard to work out. The advertisement shows the images stationary in space, that's a hard problem to solve to make them stable as you walk around let alone move your head. If it isn't that way and they are in fixed locations relative to the glasses, then it would be a bit disconcerting to move with them on. You look at advertisements from google glass and it's so far off the reality. I can't really get that hyped over promotional fluff.