Researchers at Nagoya Institute of Technology have developed a unique communication system that lets an image or message drawn on a touchscreen be felt by another user in their palm of their hand.
The system relies on an array of almost 400 individually controlled ultrasonic speakers that produce enough force to be felt as a single point pushing on the skin. So the movements on the touchscreen are physically recreated on a hand held in front of the array. The researchers originally developed the concept as a way to allow the emotions behind a message to be conveyed to the person who receives it. But using the technology as another physical interface for visually impaired users to feel a braille message seems like a far more practical application. [DigInfo]