App Store

Google Play

800 000+ bestselling stories and Storytel Originals. From [price]/month. Cancel anytime.

Audiobooks for everyone

Copy of Device Banner Block 894x1036 3

Descubre un mundo infinito de historias

Escucha y lee

Sheri Bell-Rehwoldt

From hospital and police codes to Cockney slang, spoken codes can be both helpful and entertaining. Learn the history behind some of today’s most useful and popular codes, and then have fun creating a language all your own.

Various Narrators

Capstone Press

Making and Breaking Codes

Speaking Secret Codes

Jillian Gregory

Throughout history, army generals, spies, and even scientists have guarded information through secret codes. Find out how they did it and learn how to create your own secret codes. You and your friends can share secrets that will leave everyone else scratching their heads.

Making Secret Codes

Coded information may look confusing, but most codes provide hints that can help you break them. Learn how to find and interpret code patterns and repetitions. With your new super-sleuthing skills, you’ll be cracking codes in no time!

Making and Breaking Codes

Making and Breaking Codes

Libros en orden

Escucha y lee