> Scuttlebutt (decentralized social network / protocol) has a tool specifically for this. It's called Dark Crystal. the basic summary is that your secreted gets securely divided among your friends. none of them can read it, but if you get enough of them to send their "shards" back to you you can rebuild the "crystal" and recover your secret.

> The web site isn't great but... https://darkcrystal.pw/

> and here, of course, is the Scuttlebutt site: https://www.scuttlebutt.nz/

Sounds like a variant of Shamir's Secret Sharing [1]. Here are some other variants of secret sharing mentioned [2].

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

[2] https://en.wikipedia.org/wiki/Secret_sharing