If you're like designer Mac Funamizu, you probably hum along to catchy tunes and try to follow the beat with some rapid finger-tapping. However, Funamizu is more fidgety than most. He finds himself doing a lot of humming and drumming even when there's no music in the air.
Since he doesn't want to put a good tapping to waste, he's thought up an interesting concept: a wrist-mounted gadget that will not only play MP3s, but also crank out music based on your frenetic finger taps. You'll be able to adjust the music it synthesizes too, so you can get accurate air guitar solos or pretend piano concertos.