There's no mystery about it -- codes are hot! Viewers around the world flocked to The Da Vinci Code, Sudoku sells everywhere, and hackers are the new heroes to a generation of coder kids. What's the secret message? The Secrets of Codes brings it all together, from ancient Egyptian hieroglyphics to World War II's Enigma machines, to the samurai code of honour, to the brands and trademarks we encounter every day. Filled with lavish illustrations and hundreds of full-color photographs, this all-in-one family reference provides hours of fun and entertainment for any reader.