[img src:http://alien.mur.at/rax/SURVEILLANCE/SURV1/surv1-contacts.jpg]

“This tape records a person (Robert Adrian) in a white cap as he passes by all the surveillance cameras in the (then new) Karlsplatz U-bahn station in Vienna. The tape is an unedited single take of the surveillance monitors by Karl Kowanz who was located in the control room with the attendant. The attendant switched the monitors so that the cameraman could follow the walker through the station system.”[1]

[1] http://alien.mur.at/rax/