The folks over at NEC recently unveiled a new method of command input. Called the NEC ArmKeypad, these unique sensors are strapped around your arm and allow you to issue commands by tapping different places on your arm. Designed to replace gesture commands that are sometimes hard to remember, the NEC ArmKeypad can be applied to portable media players – for your to change tracks or adjust the volume while you’re on the go. No need to get your Mp3 player covered in sweat – just tap your wrist or clap your hands instead. Hit the break to watch a video of the Keypad in action: