The document describes Sixth Sense technology, a wearable gestural interface developed by Pranav Mistry. It consists of a camera, projector, and mirror coupled in a pendant that is wirelessly connected to a smartphone. The camera tracks hand gestures and colors on the fingers to interpret interactions, while the projector displays digital information on surrounding surfaces. Some applications include making calls, getting maps, photos, product info, and more through natural hand gestures without touching a screen. The system aims to merge the digital and physical worlds in an intuitive way.