This is a cool/useful idea.

I thought the article was gonna be about "Shamir's Secret Sharing" [1], "where a secret is divided into parts, giving each participant its own unique part. To reconstruct the original secret, a minimum number of parts is required.". Sounds horcruxy to me :-p. I learnt about it from the PIM book [2].

1: https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing

2: https://pimbook.org/

https://github.com/jesseduffield/horcrux

This is basically a low tech (and much more unsecure) version of the n=2 case.