A Ph. D. student at Carnegie Mellon University in Pittsburgh, Pennsylvania has developed a series of sensors that could allow you to control electronic devices.
The device, which is known as the “Skinput” system, involves using bio-acoustic sensors and a small projector that displays a menu, number pad, or similar device directly onto the surface of the skin. Software that comes with the system can be configured to detect different waves based on where the user touches, and then uses that information to complete a designated function.
In an interview with BBC News, Harrison, who was assisted on the project by Desney Tan and Dan Morris of Microsoft Research, called the human body “the ultimate input device.”