'Apple Glass' could turn any surface into a display with touch controls

Touch screens become impractical when that screen is next to your eye in something like ‘Apple Glass,’ so Apple is investigating how you could manipulate virtual controls in the real world.
A recently revealed patent application showed Apple proposing a way to use Apple AR to display information on what would appear to anyone but the owner, as a blank screen. Now in a separate application, it’s looking at making any surface appear to “Apple Glass” wearers as a control panel, with buttons and a display.