The "'Code-O-Graph "'is a field cipher device and identifier from the Captain Midnight radio serial.
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Another task was to test commercial cipher devices which vendors wished to sell to the U . S . government.
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After World War I, machine encryption made simple cipher devices obsolete, and grille ciphers fell into disuse except for amateur purposes.
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The new museum is loaded with interactive exhibitions, hands-on computers, crawl spaces, cipher devices, fallout shelters, audio-visual mini tours and informative archival films and photographs.
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Marian Rejewski ( 1905 80 ), a Polish mathematician, in December 1932 solved the plugboard-equipped Enigma machine, the main cipher device used by Nazi Germany.
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A number of other possibly secure systems were developed including Fritz Menzer s cipher device 39 ( SG-39 ) ( German : Schl�sselger�t 39 ).
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The thriller movie " U-571 " was based on the capture of the Nazi cipher device, but the filmmakers stripped the captors of their British identities.
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The French cryptographer Gaetan de Viaris ( aka Marquis Gaetan Henri Leon Viarizio di Lesegno ) who is famous for one of the first printing cipher devices ( 1874 ), solved the Bazeries cylinder in 1893, so Bazeries'alleged confidence in the system was ill-placed.
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