5 August 2013The Verge:
Launching into the camera is even faster, at least theoretically. Just grab the phone and twist your wrist three times — the phone buzzes, and opens straight to the camera from any app or screen. The screwdriver-twisting motion takes a few minutes to get used to, and I only got it to work about half the time even after some practice, but if you get it right it’s as fast a switch as I’ve ever seen.
… and you thought shake-to-undo was bad.