Tangible user interface

, an electronic musical instrument example of tangible user interface thumb|right|SandScape device installed in the Children's Creativity Museum in San Francisco A tangible user interface (TUI) is a user interface in which a person interacts with digital information through the physical environment. The initial name was Graspable User Interface, which is no longer used. The purpose of TUI development is to empower collaboration, learning, and design by giving physical forms to digital information, thus taking advantage of the human ability to grasp and manipulate physical objects and materials. This was first conceived by Radia Perlman as a new programming language that would teach much younger children similar to Logo, but using special "keyboards" and input devices. Another pioneer in tangible user interfaces is Hiroshi Ishii, a professor at the MIT who heads the Tangible Media Group at the MIT Media Lab. His particular vision for tangible UIs, called Tangible Bits, is to give physical form to digital information, making bits directly manipulable and perceptible. Tangible bits pursues the seamless coupling between physical objects and virtual data.

, an electronic musical instrument example of tangible user interface]] [[File:SandScape.jpg|thumb|right|SandScape device installed in the Children's Creativity Museum in San Francisco]] A tangible user interface (TUI) is a user interface in which a person interacts with digital information through the physical environment. The initial name was Graspable User Interface, which is no longer used. The purpose of TUI development is to empower collaboration, learning, and design by giving physical forms to digital information, thus taking advantage of the human ability to grasp and manipulate physical objects and materials. This was first conceived by Radia Perlman as a new programming language that would teach much younger children similar to Logo, but using special "keyboards" and input devices. Another pioneer in tangible user interfaces is Hiroshi Ishii, a professor at the MIT who heads the Tangible Media Group at the MIT Media Lab. His particular vision for tangible UIs, called Tangible Bits, is to give physical form to digital information, making bits directly manipulable and perceptible. Tangible bits pursues the seamless coupling between physical objects and virtual data. ==Physical icon== A physical icon, or phicon, is the tangible computing equivalent of an icon in a traditional graphical user interface, or GUI. Phicons hold a reference to some digital object and thereby convey meaning. ===History=== Physical icons were first used as tangible interfaces in the metaDesk project built in 1997 by Professor Hiroshi Ishii's tangible bits research group at MIT. The metaDesk consisted of a table whose surface showed a rear-projected video image. Placing a phicon on the table triggered sensors that altered the video projection.

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