Codemoji.org is a collaboration between Mozilla and Italian designers ToDo that I was responsible for commissioning as part of a public education campaign. Our goal was to teach the basics of how ciphers worked - the mathematical algorithms behind encryption. Based on simple substitution ciphers, CodeMoji is a web app that allows users to enter a message, which is then encrypted using emojis as the cipher. The receiver only understands the string of emojis they receive if they know the emoji used to encrypt them. The game helps them guess that cipher. The app was a hit, with hundreds of thousands of messages successfully encrypted and 130 press mentions in 25 countries.
The app won the 2016 Shorty Award for social good.