The document discusses the Sixth Sense technology, a wearable gestural interface developed by Pranav Mistry at the MIT Media Lab. It consists of a camera, projector, and mirror worn on a pendant around the neck. The camera tracks hand gestures which are used to interact with information projected onto physical surfaces using the projector. Sixth Sense allows users to access digital information in a natural way through gestures, overlaying virtual content onto the real world. It has applications in areas like augmented reality, mobile devices, and helping disabled individuals. The technology provides an easy to use, portable interface but security and accuracy need further improvement before widespread adoption.