Multitouch refers to a touchscreen interaction technique in which multiple simultaneous touchpoints and movements can be detected and used for screen navigation or to control objects (such as sorting a series of pictures) on the screen. Various combinations of two or more fingers may be used together to create control gestures. A user may, for example, zoom into a picture by placing a thumb and an index finger on a touchscreen and then moving them apart. To zoom out, a user would move the same two fingers back together in a pinching motion.

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