The Spy Code Handbook: How to Make Code and Cipher Machines to Outfox Your Enemies

A hands-on activity book that shows children how to build twelve code and cipher devices, the kind spies have used for centuries, using only a pencil, scissors, card and glue.

Each device comes with instructions for making it and for writing and decoding secret messages. Notes cover how to complicate a cipher so it becomes harder to crack, even for another reader of the book. It's a step-by-step project book for kids, not a history or reference text.

Duncan Ball is an Australian children's author best known for the Selby and Emily Eyefinger series. He wrote The Spy Code Handbook with his son Ian Ball; Stephen Case illustrated it. The book appeared under several titles and imprints through the 1990s, including a UK Collins hardcover in the \"Activity Books\" series and an Australian edition marketed as \"Ashtons Spy Code Handbook.\"