"A hands-on guide to introduce kids to the fascinating world of secret codes and ciphers, CODE CRACKING FOR KIDS explores many aspects of cryptology, including famous people who used and invented codes and ciphers, such as Julius Caesar and Thomas Jefferson; codes used during wars, including the Enigma machine, whose cracking helped the Allies gather critical information on German intelligence in World War II; and work currently being done by the...

The revolution is now unstoppable. Which cryptocurrency will become the new dollar? The market of cryptocurrencies has now reached over 350 billion dollars in evaluation. It is a remarkable achievement since now this industry is bigger than McDonald's and Pepsi. If this phenomenon could be left outside the media a few years ago, now it is impossible to deny that there is a true revolution in the act. If you have never heard about the term "cryptocurrency",...

A handbook for the budding cryptographer including codes and ciphers, invisible inks, concealment techniques, spy stories and some history.

This illustrated encyclopedia surveys the history and development of code-making and code-breaking in all areas of culture and society from hieroglyphs and runes to DNA, the Zodiac Killer, graffiti, and beyond.

Chester Nez, the last surviving member of the original twenty-nine code talkers, discusses his life growing up in the Checkerboard Area of the Navajo reservation, and shares the story of how he helped the United States develop and implement a secret military language based on his native language during World War II that became the only unbroken code in modern warfare.

Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages.