Sixth Sense is a wearable gestural interface developed by Pranav Mistry that augments physical objects with digital information. It consists of a camera, projector, and mirror worn on a user's finger that captures gestures and projects related information onto surfaces. The system processes images and gestures through a mobile device to access and display digital content. Some applications include getting product information by pointing at objects, viewing maps or photos by gesturing onto surfaces, and making calls through projected keypads. The Sixth Sense prototype demonstrates how such a system could serve as a transparent interface for accessing information about the physical world through natural hand motions.