Google files patent for virtual keyboard(unwiredview.com)
unwiredview.com
Google files patent for virtual keyboard
http://www.unwiredview.com/2013/01/17/googles-project-glass-could-be-operated-via-laser-projected-virtual-keypadkeyboard/
http://www.unwiredview.com/2013/01/17/googles-project-glass-could-be-operated-via-laser-projected-virtual-keypadkeyboard/