Cryptology - The art of the secret message

Codes, ciphers and encryption have long been used to keep information from getting into the wrong hands. Secret messages come in different varieties from morse code, to secret decoder rings and invisible ink. Some are based on math algorithms, chemical reactions and pattern recognition.

Bring your own secret code and learn to make codes from others.

To learn more about secret codes:

http://www.kidzworld.com/article/3844-making-invisible-ink-appear

http://www.exploratorium.edu/ronh/secret/secret.html