If You don´t think this is art, call ... english | deutsch Ebener/Winters A large white billboard measuring about 100 square meters is going to be mounted on the façade of the University of Art located on Linz's main square. The message printed on it in large letters will read: "If you don't think this is art, call 0170 1234567." Within seconds after a passer-by calls that number, a paintball will be shot at the billboard from a scaffold set up a short distance away. The ball splatters against the surface of the billboard leaving a brightly colored splotch. Then the caller hears a recorded message: "If you still don't think this is art, please call again!" Every caller (no matter where they're calling from) triggers a paintball shot fired by a cannon being aimed at random. Over the course of seven days, this will produce an image that is constantly changing and becoming increasingly colorful. The paintball variant of the interactive billboard is one of several possibilities of utilizing a cell phone/billboard interface. Concepts now in the developmental phase for various advertising clients include projects in which parts of the billboard move, polls are conducted among callers, or giveaways are distributed via cell phone call. Enabling passers-by to have a direct impact on a billboard adds an interactive element to classic outdoor advertising that involves viewers and customers in a way that is well-known in the field of interactive art: the "work" or the "piece of advertising" challenges viewers to act and thus makes possible an approach that is considerably more emotional than conventional strategies. The interactive billboard has been registered for a European patent by Raumschiff-Interactive GmbH.