Reactable: tangible multi-touch interface

“At the seashore, between the land of atoms and the sea of bits, we are now facing the challenge of reconciling our dual citizenship in the physical and digital worlds. Our windows to the digital world have been confined to flat rectangular screens and pixels, or ‘painted bits.’ While our visual senses are steeped in the sea of digital information, our bodies remain in the physical world. The vision of Tangible Bits is to provide seamless coupling between these two very different worlds of bits and atoms.” — Hiroshi Ishii

Source: Tangible Bits by Howard Rheingold