You may ask yourself, why bother tapping touchscreens or physical buttons when an accelerometer can be strapped to the wrist, turning any ol' arm into a wireless touch panel? That's the claim that NEC is making today. A wrist-worn band of compact acceleration sensors divides the arm into seven sections along the upper, middle, and lower arm that can then be assigned as virtual inputs to an electronic device. No more reaching into a bag to answer the phone, no more plucking at the strings of a guitar to create song -- everything is controlled through a natural tap of the arm or clap of the hands. Once in a lifetime tech that feels the same as it ever was.