The document discusses the history and features of Sixth Sense technology. It was first implemented as a neck-worn projector and camera system by Pranav Mistry at the MIT Media Lab. Sixth Sense technology integrates digital information into the physical world, allowing any surface to become a touchscreen controlled by hand gestures. It uses a mini-projector, camera, and smartphone to project information onto surfaces and recognize gestures. Applications include motion capture, 3D drawing, and surface computing.