Samsung Launches 3D Movement Recognition Phone
Shuttertalk reports that Samsung have launched the world's first phone equipped with a continuous 3D movement sensor. Movement sensors in mobile phones to date have been limited to slope calculations and applied to some games and bio-related features. The potential is there to do away with the need for complex keypads on mobile phones, MP3 players, digital cameras and other handheld products. Many functions will be controlled by movement instead of buttons.
Without tactile feedback, waving fingers in the air and making funny gestures to do things is a waste of time and customers will hate it.
You can use your optical mouse without it touching the tabletop too, but it isn't at all a reasonable way to operate it.