Wearable computers and their interfaces are designed to be worn on the body, such as a wrist-mounted screen or head-mounted display, to enable mobility and hands-free/eyes-free activities. Traditional uses are for mobile industrial inspection, maintenance and the military. Consumer uses include display peripherals, computer-ready clothing and smart fabrics. MIT has also demonstrated SixthSense, a gesture-controlled necklace device that projects digital information onto real-world objects and locations.