"Raquel Rennó, Rafael Marchetti, and Gonzague Defos du Rau. 2005. Non_sensor. In Proceedings of the 13th annual ACM international conference on Multimedia (MULTIMEDIA '05). ACM, New York, NY, USA, 1055-1056. DOI=10.1145/1101149.1101374 http://doi.acm.org/10.1145/1101149.1101374" The paper presents Non_sensor, a digital art project that makes use of a Polhemus motion tracking system to create a electromagnetic field which is disturbed by metallic objects that are manipulated by the visitors in the installation. This disturbance is interpreted by the system as movement, and presented in the interface as lines that create trajectories according to the distortions. Visitors can therefore design different graphic patterns in the interface by playing with objects.

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