[jsperx]

I think the challenge is more coordinating the 8 people who will be a trusted part of your life long-term. Also they’d have to be sure to keep their fragments of the key intact through replacing devices, etc, no? Seems like just keeping a Yubikey in a safe deposit box would be simpler.

[Tijdreiziger]

Define ‘safe deposit box’?

If it is a safe at your home, you need to have a fixed home address in the first place, and the usual advice about off-site backups also applies.

If it is at friends or family, you’re back at the same problem.

If it is a rented deposit box, you need to trust the company you rent it from (banks don’t usually offer such services anymore, and there are risks like in [1])

[1] https://www.nytimes.com/2019/07/19/business/safe-deposit-box... (archive: https://archive.is/7qbkR)

[segmondy]

if they replaced their device, their new device would still preserve your key, just like you replacing your device keeps your key.