It's all about the key device 41 and its inventor: A simple toolmaker from the Ore Mountains becomes a central figure in the Wehrmacht's cipher department - but what happened to Fritz Menzer after the war? Together with filmmaker Robert Jahn, researchers from the Deutsches Museum have conducted extensive research to find out who the man was who developed the much more secure successor to the legendary Enigma. The results of this exciting search for clues are now available as short film documentaries exclusively in the Deutsches Museum app (www.deutsches-museum.de/en/mu....