The MuDA – Museum of Digital Art in Zurich has rooms with extensive windows, admitting a great deal of natural light. In order to create suitable indoor conditions for exhibitions, it proved necessary to control the incoming illumination. A solution involving curtains did not seem in key with the thematic focus of the institution. As an alternative, Slow Screen was developed – a kinetic installation which extends over the entire 100-square-metre window façade of the museum. It consists of 805 physical pixels in the form of revolving aluminium panels, individually controlled and powered by motors in such a way that the angle of tilt can be continuously adjusted. This not only makes it possible to regulate incoming light on the museum’s premises – outside visiting hours, Slow Screen metamorphoses into a display which conjures up slow-moving animations, patterns, pictures and text messages behind the museum façade.