Codex32 allows you perform Shamir secret sharing operations and error correcting code without using a computer. Instead, you can perform the operations by hand

Codex32 allows you perform Shamir secret sharing operations and error correcting code without using a computer. Instead, you can perform the operations by hand using cardboard code wheels called volvelles. It is a really fun idea and does not require deep technical knowledge to operate. The intent is for Bitcoin secret keys, but it can be used for any secrets. https://secretcodex32.com/ https://secretcodex32.com/