codes

Super Little Giant Book of Secret Codes
$6.95
Kids love secret codes, because it allows them to send special private messages to their friends��and outwit adults. And this Super Little Giant��� offers dozens of intriguing and colorfully displayed choices, with an easy-to-follow explanation of each system, a history of its development, and illustrations that show just how the code works. Some of the codes are well-known, including Morse, with its dots and dashes. Others are more rare, such as an ancient transposition cipher where the sender writes the message on a paper wrapped around a tube or stick. And artistic types will really enjoy the ��dancing men�� cryptogram, which has 26 drawn figures in different positions corresponding to the letters of the alphabet.

Xbox 360 Live 1600 Points [Online Game Code]
$19.99
I ordered this code online and almost immediately got an email with the code. I typed it into my Xbox 360 and BLAMMO I had the 1600 credits.

It seems unfair that you can't purchase with an amazon gift card, as other people claimed. I used my debit/credit card and had no problem.

Codes, Ciphers, Secrets and Cryptic Communication: Making and Breaking Secret Messages from Hieroglyphs to the Internet
$19.95
While this book covers a wide range of topics, I found it to be shaky on some topics. In particular, modern developments such as quantum cryptography, electronic warfare terms (SIGINT, ELINT, and especially RADINT--book description is wrong). Perhaps the author's strength is in historical cryptography, and he has not researched or does not understand modern developments. My overall impression is that the book covers an enormous range of topics, but in a shallow way. Cryptanalysis is not discussed in any depth, unlike other code/cipher books I've read.

The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography
$16.00
Easy to read,good information if you enjoy this type of thing as much as I do.