We fitted keyboard onto our screens, AR devices normally come with a joystick or something.
I have high hopes for similar projects to Tap Keyboard or the Myo armband, that continue to evolve on something that IMO has large implications on how we can evolve as a society the same way smartphones did. A wearable input device that was _good_ (defined by not being cumbersome, probably even fashionable and functional, as should match current input) would be for me the extra step .