VincenzoRomano writes "You won't need to swipe your fingers over smallish touch screens. You'll move your arms, hands and fingers (or whatever else applies) in the air or shake the handset. The phone camera(s), the G-sensor, the compass and so on will be used by a software to understand the gestures and to translate them into control commands. This breakthrough comes from a company called GestureTek, a non-startup company in this field."
I love the idea of my screen no longer being smudged. I hate the idea of people doing this on a bus.