Perfect for word lovers and puzzlers, this comprehensive, illustrated volume includes Indian sign language, Morse code, Jefferson's cipher wheel and more, presented in an informative and historical manner.

This book is about language that is designed to mean what it does not seem to mean. Ciphers and codes conceal messages and protect secrets. Symbol and magic hide meanings to delight or imperil. Languages made to baffle and confuse let insiders talk openly without being understood by thosebeyond the circle.Barry Blake looks at these and many more. He explores the history and uses of the slangs and argots of schools and trades. He traces the centuries-old cants used by sailors and criminals in Britain, among them Polari, the mix of Italian, Yiddish, and slang once spoken among strolling players andcircus folk and taken up by gays in the twentieth century. He examines the sacred languages of ancient cults and religions, uncovers the workings of onomancy, spells, and gematria, looks into the obliqueness of allusion and parody, and celebrates the absurdities of euphemism and jargon.Secret Language takes the reader on fascinating excursions down obscure byways of language, ranging across time and culture. With revelations on every page it will entertain anyone with an urge to know more about the most arcane and curious uses of language.

As handy and useful as it is to communicate with smartphones, email, and texts, not to mention paying bills and doing banking online, all these conveniences mean that a great deal of our sensitive, personal information needs to be protected and kept secret. Readers can anticipate an intriguing overview of the ciphers, codes, algorithms, and keys used in real-life situations to keep peoples’ information safe and secure. Examples of how to use some types of cryptography will challenge and intrigue.

When the United States declared war on Germany in April 1917, it was woefully unprepared to wage a modern war. Whereas their European counterparts already had three years of experience in using code and cipher systems in the war, American cryptologists had to help in the building of a military intelligence unit from scratch. This book relates the personal experiences of one such character, providing a uniquely American perspective on the Great War. It is a story of spies, coded letters, plots to blow up ships and munitions plants, secret inks, arms smuggling, treason, and desperate battlefield messages. Yet it all begins with a college English professor and Chaucer scholar named John Mathews Manly. In 1927, John Manly wrote a series of articles on his service in the Code and Cipher Section (MI-8) of the U.S. Army’s Military Intelligence Division (MID) during World War I. Published here for the first time, enhanced with references and annotations for additional context, these articles form the basis of an exciting exploration of American military intelligence and counter-espionage in 1917-1918. Illustrating the thoughts of prisoners of war, draftees, German spies, and ordinary Americans with secrets to hide, the messages deciphered by Manly provide a fascinating insight into the state of mind of a nation at war.

This is a study of an almost inaccessible area of the intricate linguistic fabric of Afghanistan – namely, its secret codes of communication. The text draws on a profound knowledge of Afghanistan and neighbouring regions, as well as the cultural and sociolinguistic processes at work across Eurasia. The author situates these sociolinguistic matters within the appropriate diachronic and comparative background, and traces the numerous threads which connect them to areas both close to and distant from Afghanistan. The book will be of great interest to scholars from a wide range of disciplines, including, but extending beyond, the realms of linguistics, cultural history, and sociology. It will also be of practical value in many areas, notably with regards to military and political issues, as well as humanitarian aid.

A brother and sister find a man entombed in ice in a Rocky Mountain glacier. Apparently he's been there for at least 50 years. Who is he? How did he get there? Where was he from? In this clever little whodunit, bestselling children's author Eric Walters joins forces with expert photographer Kevin Spreekmeester to present an unusual combination of intrigue and interaction.

Imagine having a job that has been around for thousands of years. People called cryptologists have been making—and breaking—codes almost as long as humans have written things down. Read about the historical code makers and breakers who protected their countries by coding and decoding messages for their governments, and the modern cryptologists who keep emails, texts, and online purchases secure.

This book is a cross-cultural reference volume of all attested numerical notation systems (graphic, non-phonetic systems for representing numbers), encompassing more than 100 such systems used over the past 5,500 years. Using a typology that defies progressive, unilinear evolutionary models of change, Stephen Chrisomalis identifies five basic types of numerical notation systems, using a cultural phylogenetic framework to show relationships between systems and to create a general theory of change in numerical systems. Numerical notation systems are primarily representational systems, not computational technologies. Cognitive factors that help explain how numerical systems change relate to general principles, such as conciseness or avoidance of ambiguity, which apply also to writing systems. The transformation and replacement of numerical notation systems relates to specific social, economic, and technological changes, such as the development of the printing press or the expansion of the global world-system.