My favorite paper computer https://pocketmod.com
https://pocketmod.com/ has this exact password system. It's under "Misc/Passwords" and shows a grid of random characters you can seed.
https://github.com/chadams/mini-lang
My favorite paper computer https://pocketmod.com
https://pocketmod.com/ has this exact password system. It's under "Misc/Passwords" and shows a grid of random characters you can seed.
https://github.com/chadams/mini-lang