IPhone proximity sensor is able to detect the presence of objects in close proximity to your phone without physical contact. Thus, the operating system iOS can block touch screen device to prevent accidental presses during a call when the phone is close to your ear, and saves battery power.
Informal applications developer Ryan Petrich wondering - can a proximity sensor to control the user? Why - the second question. But now on the platform iOS jailbroken possible. Need only install tweak Always On Proximity, which passes into the hands of the owner of iOS-device control proximity sensor. Enable or disable the sensor at any time one of the gestures Activator.
Always On Proximity tweak released in Cydia this week. You can free download news from the repository BigBoss.
Recall that the installation Always On Proximity to perform the jailbreak.