Sixth Sense technology allows users to integrate digital information into the physical world using hand gestures. A sixth sense device consists of a camera, projector, and smartphone that allows users to interact with surfaces like touching a screen. The camera tracks colored markers on the user's fingers to interpret gestures and send data to the smartphone for processing. The smartphone searches the web based on gestures and the projector projects the digital information onto physical surfaces, blending the digital and physical worlds. Potential applications include using gestures to access maps, photos, product information or make drawings in open spaces.