Although Google Glass is looking great, I’m sure it’ll evolve rapidly over the next few years. Apart from increasing the resolution, I expect it to expand from one eye to two, to allow for three-dimensional display. I also wonder whether it’s really the best idea to put the display above the line of vision rather than below it — if you’re using it for reading a book, surely it must feel like holding the book above your head.
However, the main area for improvement is how you interact with it. Google Glass apparently requires you to touch the frame to control it, which is essential one-dimensional and tiring. However, traditional devices such as keyboards, mice and touch-screens are not going to be very effective, either. I’m not sure what they’ll come up with, but I won’t be surprised if Google Glass 3D in 2016 will be accompanied by a Google Glove (or perhaps just by small sensors on your finger nails).