'WaveOff' Lets You Control Your iPhone's Screen With a Wave
With a new jailbreak tweak called WaveOff
by iOS developer Nick Allen, you can use a wave gesture to turn your iPhone’s screen on and off.
WaveOff harnesses the power of your iPhone’s proximity sensor to do this. When you perform a smooth, slow wave in front of your iPhone reasonably close to the proximity sensor, your screen will turn either on, or off, depending on its state when you perform the gesture:
One thing to note is that WaveOff does not unlock your iOS device if it’s locked. All it does is turn the screen on or off. Because of this, the tweak only works when the device is already unlocked, such as when you're on the home screen or in an application. With that being the case, the tweak makes a good combination with setting the iOS Auto-lock feature to "Never" so that you can use this tweak to turn off the screen when not in use rather than locking the iPhone.
WaveOff seems to be a cool tweak to play with; it doesn't have any complex options to configure either. If you want to give it a try, it's available in Cydia's BigBoss repository for 99˘ right now.