Gesture-enhanced single-touch, also known as "dual control", "gesture touch", and often "dual-touch", describes the ability of a touchscreen to register certain two-finger gestures, despite lacking hardware that would allow it to fully register all two-finger movements.[1] A very common application of gesture-enhanced single-touch technology is the pinch-to-zoom gesture, which allows the user to zoom in or out by moving two fingers farther apart or closer together while touching the display.