Couldn't you just use something like Circular polarization http://en.wikipedia.org/wiki/Circular_polarization. Each point on the glasses is a TFT and polarizes the light coming in to the opposite direction thus creating a good black surface.
His second argument about the processing time is good if the processing is done on the phone but with cellular networks becoming better organized you could easily have a computing cluster do most of the work. Using that and some basic statistical inferences (to fudge some of the processing) you can get pretty impressive response times.
His second argument about the processing time is good if the processing is done on the phone but with cellular networks becoming better organized you could easily have a computing cluster do most of the work. Using that and some basic statistical inferences (to fudge some of the processing) you can get pretty impressive response times.