Smartwatch prototype turns your arm into a touchscreen

A prototype smartwatch called the LumiWatch has been created by researchers at Carnegie Mellon University. The timepiece has a feature that allows it to project images on the user's arm that can be swiped and tapped. In other words, the LumiWatch turns the user into a touchscreen. The watch can project an image of up to 40 square centimeters, five times the size of a typical smartwatch display.

The researchers say that skin happens to be an attractive surface for projecting such an interactive display. Despite some physical and color distortions, the team working on the device says ...