by Steven White
Double tap/wave your hand to turn on or off your flashlight. Only works if you do have a light emitting diode on your rear camera. CAUTION: this relies on the proximity sensor, and as such can't tell between your hand and anything else. As such if you set it down on its face twice, the light will come on. Be careful.
Also recommended is the ProxLight Stopper, which is for use on the home screen as a quick way to stop ProxLight.