CREATE YOUR OWN SECRET LANGUAGE: Invent Codes, Ciphers, Hidden Messages, and More--A Beginner's Guide

From simple cyphers to entirely new alphabets, this title will help you master the skills of secret communication, whether it's written, drawn, or spoken. By the time you're finished reading, you'll be able to share messages that no one will be able to understand--unless you want them to. Fully illus.