Sixth Sense is a wearable gestural interface developed by Pranav Mistry that allows users to interact with digital information projected onto physical surfaces using natural hand gestures. It consists of a camera, projector, and mirror connected to a smartphone. The camera tracks hand gestures marked with colored tape while the projector displays corresponding information onto surfaces like walls. Applications include taking photos, getting flight updates, making calls, and accessing information about objects. Sixth Sense provides a portable and multi-touch interface that bridges the digital and physical worlds through gesture-based interactions.