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The video collective «Telewissen» (a pun on tele-knowledge and tele-vision) was founded in 1969 in Darmstadt by Herbert Schuhmacher, members were a.o. Rolf Schnieders, Rainer Witt, Nik Schuhmacher.
In 1972 they demonstrated the use of mobile video technology, which had recently been imported to Germany, in front of the exhibition site of documenta 5. Taking into account that public television, state owned and educational, occupied only two national channels, the demonstration of closed-circuit video with the people's electronic picture in public space was totally new to most citizens.