The interface revolution continues to roll on and this time round musical instruments are getting the treatment. Reactable is the result of this treatment, more than just a touch screen surface, it is a tangible interface. Developers Sergi Jordà, Marcos Alonso, Martin Kaltenbrunner and Günter Geiger working at the University of Spain developed the Reactable over 3 years, releasing it publicly in 2006. With soldering irons and circuit boards the Reactable was born. A musical instrument at its most basic, it is much much more. Analogue synth, mixing desk, sampler, metronome, sequencer and harmonizer, all built into one silky smooth interactive surface interface, a Tangible user interface –TUI -.
Various blocks called tangibles are placed on the surface and used to interact with various functions of the Reactable. Printed onto the faces of the tangibles are a black and white pattern or fiducials that are recognized by a camera on the underside of the table. Also built into the underside of the table is the projector that provides the image on the Reactables surface. The camera is responsible for driving the interface, the projector gives you feedback and the software reacTIVision brings it all together, presenting fluid motions and instant reactions.