Books with title Codes and Ciphers

The enduring appeal of spies and their technology, codes and mysterious ways are explored in this engaging series of four colorful books. Each explores a different aspect of the spy trade, interspersing historical tidbits with tales of spies from popular culture and contemporary movies. Other titles in this series include: Secret Agents, Spy School, and Top Technology. Codes and Ciphers covers everything from Caesar's alphabetic substitution system and Morse code to the Enigma machines and microdots of World War II. Sidebars explain how to create a cipher, how to craft invisible ink messages using wax and crayons and how to make a one-time pad.

Learn about ciphers and codes--the tools used to keep a message secret. See how ciphers were used by the patriots in the American Revolutionary War. Find out how to make your own cipher. In this book, you will discover how flag signals and smoke signals work, see how computers use ciphers and codes today, find out how you can break a cipher without a key.

Intrigue your friends with birthday prophecies, spin a mystifying wheel of fortune, travel through the Valley of Fear, and take on Dad's Challenge! This collection presents scores of intriguing brainteasers from the fascinating world of codes and ciphers. Assembled by a master puzzle-maker, these activities are inspired by sources as diverse as the Sherlock Holmes stories and the procedures of the U.S. Navy. Code-breakers ages 8 and up can go on cryptic treasure hunts, engage in surreptitious writing, send secret messages, and learn all about fingerprinted words. Other puzzles feature a foolproof code (perfect for keeping a private diary), three-letter patterns, a nonreciprocal alphabet, and much more. The stimulating and entertaining challenges include easy-to-follow directions as well as complete solutions.

Intrigue your friends with birthday prophecies, spin a mystifying wheel of fortune, travel through the Valley of Fear, and take on Dad's Challenge! This collection presents scores of intriguing brainteasers from the fascinating world of codes and ciphers. Assembled by a master puzzle-maker, these activities are inspired by sources as diverse as the Sherlock Holmes stories and the procedures of the U.S. Navy.Code-breakers ages 8 and up can go on cryptic treasure hunts, engage in surreptitious writing, send secret messages, and learn all about fingerprinted words. Other puzzles feature a foolproof code (perfect for keeping a private diary), three-letter patterns, a nonreciprocal alphabet, and much more. The stimulating and entertaining challenges include easy-to-follow directions as well as complete solutions.

Can flashing lights send out a secret message? Did a famous spy use sketches of butterflies to hide messages? Can a digital photo hide a secret code? For centuries, spies have used many different ways to pass secret information. Codes and ciphers keep information safe from the enemy. Author Susan K. Mitchell uncovers the secrets to the amazing world of spy codes and ciphers.

Can flashing lights send out a secret message? Did a famous spy use sketches of butterflies to hide messages? Can a digital photo hide a secret code? For centuries, spies have used many different ways to pass secret information. Codes and ciphers keep information safe from the enemy. Author Susan K. Mitchell uncovers the secrets to the amazing world of spy codes and ciphers.