epa07080358 A view of a detail of a screen as part of an interactive installation that illustrates the 'big data' used by multinational and provided by its clients, in the German Spy Museum in Berlin, Germany, 01 March 2018. The German Spy Museum gives an insight into the history of espionage. The exhibition shows from the ancient spying devices to the most recent surveillance techniques. EPA-EFE/FELIPE TRUEBA