The basis of the short-term exhibition is a traveling exhibition from the Slovak Technical Museum, which tells the story of Enigma and the history of cryptology. The NTM has supplemented this with the history of projects where the political situation led to secrecy.
In addition to the famous Enigma encryption machine on loan, the National Technical Museum also displays two other encryption machines from the NTM collections, old spy cameras, aerial photography equipment, and communication technology. Visitors can learn about classified projects such as the development of a new Jawa motorcycle prototype, Esa household appliances, and Curta pocket calculators, which took place during World War II.
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