When were people becoming spies? Did you know that "drones" were already used in the first world war? Which intelligence service had the best codes? Who knows more about you? Stasi, NSA, Facebook or Payback? In its interactive high-tech exhibition in the capital of the spies, the "Deutsche Spionagemuseum" (German Espionage Museum)shows the history of espionage on 3,000 square meters.