The document describes Sixth Sense technology, a wearable gestural interface created by Pranav Mistry. It consists of a camera, projector, and mirror coupled in a pendant-like mobile device. The camera tracks hand gestures while the projector displays digital information on surrounding surfaces. Users can interact with projected apps and access information about objects, places, and people through natural hand gestures. Some example uses include making calls, getting maps and directions, checking the time, and taking photos in the air. The Sixth Sense prototype demonstrates the system's usefulness, viability, and flexibility in accessing digital information in the physical world.