With this fun challenge, brought to you in partnership with the Science Museum Group, you and your child can learn how to make a cipher wheel together and use it to send secret messages to one ...

Led by the brilliant Alan Turing, inventor of the computer, the codebreakers of England's cipher-cracking organization ... which is why the wheels of the Enigma machine were designed to move ...

Photo: A four-rotor German Enigma cipher machine made during WW2 ... then scramble it by using three to five notched wheels, or rotors, which displayed different letters of the alphabet.