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I went through the process of considering this recently, and considered a safe deposit box, but as mentioned, they're not viable in many places. I eventually se

I went through the process of considering this recently, and considered a safe deposit box, but as mentioned, they're not viable in many places. I eventually settled on multiple security keys, distributed across multiple locations I have access to. And it got me thinking, is there a business opportunity in providing secure storage for security keys? Safe deposit boxes are, as the post notes, either mythical or extremely expensive and inconvenient. I can come up with a few challenges to running such a service, and a few solutions, but I ultimately come back to thinking: nobody smart enough to use a security key is going to trust some third-party to store their emergency key, no matter what security methods are implemented. Am I right in that assumption?

withinboredom 4y ago
Probably correct. The correct answer is something I’m working on for fun. Basically, witness encryption of a sort. If you can cryptographically/mathematically prove something has happened, you can decrypt a “bootstrap” of your digital life. I’m working on the tooling/encryption bits now, but I already have a (not published) service that monitors phones/computers for “liveness” and provides a cryptographic proof that they are dead when they go offline for a configurable amount of time. You can use that as an input for the witness encryption, along other inputs. You can just store that file in the open, maybe encrypting only your 1password master key or a backup code to your email.