If you invest in an open-source, crowd-funded Enigma machine today, make it this one. Created by S&T Geotronics of Columbus, Georgia, this device first appeared as an Instructable and is now available as a full DIY for $250, quite a bit less than the Allies spent at Bletchley Park while trying to crack Germany’s feared encryption system. Three hundred dollars gets you a fully-assembled model.
What can you do with your Enigma machine? Well, you can break codes… and make codes… and learn how Arduino works? The makers claim that you can actually get some pretty good encryption out of these things if you and your friends, say, want to communicate by wireless between your undersea lairs. They write:
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