This document describes Sixth Sense technology, a wearable gestural interface developed by Pranav Mistry. It consists of a camera, projector, and mirror attached to a pendant that is wirelessly connected to a mobile device. The camera tracks hand gestures which are processed by the mobile device to project digital information onto surrounding surfaces using the projector and mirror. Some applications include making calls, getting maps/directions, checking the time, accessing product information, and taking photos. The system allows users to interact naturally via gestures to access information about the physical world around them.