Comment by mook
I've seen https://github.com/cyphar/paperback before which basically does this, I believe. I haven't used it in the context of letting other people recover things though.
I've seen https://github.com/cyphar/paperback before which basically does this, I believe. I haven't used it in the context of letting other people recover things though.
Visual cryptography is really cool. Shamir and Naor came up with an algorithm in the 90s: https://en.wikipedia.org/wiki/Visual_cryptography#Example
Basically hand out transparencies to n people, and they all have to overlap to see the picture. It's like magic when you're playing with them.