Cracking the World's Hardest, Weirdest, and Most Crucial Codes
Didn't we all use secret codes as children to send messages to each other that no one else would understand? Those codes were usually pretty easy to launch and to break, and sometimes even involved a magic decoder ring f...
https://www.neatorama.com/2024/03/08/Cracking-the-Worlds-Hardest-Weirdest-and-Most-Crucial-Codes/