Secret Codes

The POOF-Slinky 1100 Scientific Explorer Secret Codes Decoder Kit is a fun way to learn and experiment with cryptology, the science of secret messages. This item includes (2) complete spy decoder kits and contains everything you need for you and a friend to send secret coded messages just like spies and learn about the methods behind codes, ciphers and hidden messages. Special ink markers are also included for sending "invisible" letters. This safe, fun and educational kit includes (13) different missions to explore the different kinds of secret messages, recreate messaging tools long ago and use what you learn "in the field".