GCHQ has released its own "fun, free, educational" Android app to teach secondary school students about cryptography.
The Cryptoy app, which has no permissions to access confidential information on Android devices, helps children understand basic encryption techniques and create their own encoded messages.
The government hopes the app could help find the next generation of cyber-spies. Minister for the cabinet office Francis Maude said that it was a "creative solution in the hunt for expertise, but with a 21st century spin."