The company formerly known as Sony Ericsson applied for a patent in 2010 that's yet to be granted, but you never know, one day it might wind up in a handset near you. Having recently introduced the "floating touch" Xperia Sola that doesn't require your hands to make contact with the display, the next logical step is to make the whole thing controlled just with the movement of your head. Wearing a Bluetooth earpiece with a motion sensor, you then map a custom motion onto a phone
