A Tangible User Interface is like an iceberg: there is a portion of the digital that emerges beyond the surface of the water - into the physical realm - so that we may interact directly with it. Tangible BitsIn 1997, Hiroshi Ishii & Brygg Ulmer presented their vision of “Tangible Bits” at the CHI '97 conference. They proposed the concept of a Tangible User Interface (TUI), based on the physical em