A throwback to the old radio programs, this cipher disk is a fun way to introduce children to encryption, ciphers, and secret codes that can be used to send hidden messages to one another. By introducing entropy in the form of a keyword, and rotating the rings of the disk relative to one another, a unique code cipher can be generated that only people who know these parameters can decode. Note: This app does not actually send or receive messages, nor does it encode or decode messages - it is a visual tool only.
