Don't let your secrets fall into enemy hands! With this handbook, you'll learn everything you need to know in order to create and break over 50 different codes and ciphers, using mobile phones, crossword puzzles, lemon juice and other ingenious methods. Children will have lots of fun sending secret messages to their friends and trying to decipher their responses. Short and entertaining activities for each code enable the young super-spy to master the rules of the code before trying it out for real.
- ISBN10 0141317396
- ISBN13 9780141317397
- Publish Date 29 July 2004
- Publish Status Out of Print
- Out of Print 24 March 2006
- Publish Country GB
- Imprint Puffin Books
- Format Paperback (B-Format (198x129 mm))
- Pages 144
- Language English