Sixth Sense is a wearable gestural interface developed by Pranav Mistry that allows users to access digital information by interacting with the physical world through natural hand gestures. It consists of a camera, projector, and mirror attached to a mobile device. The camera tracks hand gestures tagged with colored markers to interpret commands, while the projector displays digital information onto surfaces based on those gestures. Potential applications include making calls, getting maps and updates, drawing, and accessing information about objects or people. The technology aims to seamlessly integrate digital and physical worlds by giving users constant awareness of their environment through a simple and transparent interface.