pinch-to-zoom

Apple has won dozens of new patents across a wide array of technologies, including how pinch-to-zoom works in software and its iPad Smart Cover's attachment features.

Perhaps the most important patent is one that relates to how a touch screen reacts to a person's thumb and index finger during a pinch-to-zoom gesture. Sensors within the touch display change in size and shape based on the gestured detected by those fingers. If a thumb and forefinger start to move together, the sensory panels change around that. When they move apart, the sensors once again adapt. Other sensors around the … Read more