At first sight, nothing betrays the strange happenings at the Restaurant of the Future, a spacious, bright university canteen where scientists and students stop in for food and lunchtime chatter.
The chef, Jan Kiewied, is stir-frying peppers at a glowing stove, his staff is scrubbing pots, and clients are scooping up salads and lentil soup. Yet everyone and everything is being recorded by hidden sensors and cameras.
