The document discusses the Sixth Sense technology, a wearable gesture interface that augments physical objects with digital information. It consists of a camera, projector, mirror, and mobile device. The camera tracks hand gestures and objects, the projector displays information onto surfaces, and the mobile processes data. The technology allows users to interact with digital content by using natural hand gestures near physical objects. It has applications such as getting information about books, photos, flights, calls, products, and more. The Sixth Sense prototype demonstrates its usefulness, viability, and flexibility.