That was my initial thought as well. I wrote about how to use Shamir's Secret Sharing (with a similar Horcrux analogy) to reset master passwords for end-to-end

That was my initial thought as well. I wrote about how to use Shamir's Secret Sharing (with a similar Horcrux analogy) to reset master passwords for end-to-end encrypted applications (such as password managers): https://francoisbest.com/posts/2020/password-reset-for-e2ee-apps https://francoisbest.com/posts/2020/password-reset-for-e2ee-...