Tsubasa Yumura, a computer science researcher in Japan, rigged up a keyboard that looks like it launches letters into the computer when they're pressed. It uses a technique called projection mapping.

(3) A full keyboard displayed from a pocket-sized projector. When a person types, the key depressions are picked up by an optical or electronic beam. THIS DEFINITION IS FOR PERSONAL USE ONLY.

This device is likely to have a hinge-less folding mechanism. It may also come with a projection virtual keyboard. According to LetsGoDigital, Vivo’s patent suggests a double-folding smartphone ...