Reactable is a tabletop tangible user interface allowing several performers to control the instrument simultaneously. By moving physical objects on the table surface, users can interact with one another (locally or remotely). Researched and developed by the “Interactive Sonic Systems” team at Universitat Pompeu Fabra in Barcelona Spain.

A video camera beneath the translucent table tracks the position and relationship between the objects and instant visual feedback is displayed by a projector.

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