The Sixth Sense device is a wearable gestural interface created by Pranav Mistry that allows users to interact with digital information using natural hand gestures. It consists of a pocket projector, mirror, and camera connected to a mobile device. The camera tracks colored markers on the user's fingers to interpret gestures and project information from the internet onto surrounding surfaces. Some features include accessing product information by pointing at items in a store, checking flight statuses from paper tickets, and projecting additional information onto surfaces like books and newspapers. The device costs $350 and has potential educational uses such as virtual field trips, portable research, and facilitating collaboration and connection between students.