An infrared camera and laser beam allows users to operate a virtual controller.

Researchers at MIT, led by Pranav Mistry, have developed a new ‘mouseless’ experience that provides computer users with the familiar interaction of a physical computer mouse without actually needing one. Mouseless lets a user click and scroll a cursor on the screen using only  their cupped palm moving around a table as if they are holding a mouse. It employs an embedded infrared laser and camera on the computer to track finger and palm movements and interprets them into computer commands.

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