Having entered the darkened exhibition room, you move straight towards a platform illu­minated by the thin beam ofa spotlight. The sand-covered surface is an invitation to your fingers to play. The moment you touch the sand, the images in the ceiling-high video pro­jection change like pictures from a virtual world. A carpet of sounds and noises reinfor­ces the intense quiet of the room. Streaming puts you at the heart of the action and determines the chain of sensory, optical and acoustic signals. Confronted by one of man­ kind’s earliest storage media - the first pictorial signs were shapes engraved in the sand - you become absorbed by the characteristics of your own signs. Each new drawing and new line, which appear after the previous engravings in the sand bed have been wiped away, generate new images, sounds and noises and form associative structures in an intangible, immaterial world. Sand, which is often a transition area between land and water, acts as an interface here between a real and a virtual environment. Glass sand, for instance, is used in the computer age as a basic material and indispensable component in the manufacture of memory chips.