Yes, I remeber hearing about this a while ago, and like you said I don't think it is going to be feasable. Just imagine all the people who would bump into each other because they are busy looking at a movie and not the sidewalk, or even worse, in a car while driving. I think this sort of thing is going to turn out like the phone cameras, where they can cause more harm than they could be worth. Meaning they would have to be regulated to not use while driving or walking, only while sitting down.
But the theory would be kind cool.
Of course that is if the laser doesn't burn your retina :hotbounce :hotouch: