I have toyed around with using a secret splitting scheme like Shamir's Secret Sharing to deliver a split-up master password to an encrypted file. Then my family

I have toyed around with using a secret splitting scheme like Shamir's Secret Sharing to deliver a split-up master password to an encrypted file. Then my family members (or any others you trust) would be given the resulting passcodes. You can configure the split to be into N pieces, and require a certain minimum of pieces to reconstitute the secret, so several trusted parties would be required to coordinate in the event of your incapacitation. This is comforting as A, this cooperation is extremely likely in the event of my death, and B, the more people who have to coordinate would probably vastly reduce the chance of the splitting scheme being used against me. The list of issues with it are relatively apparent (where to permanently store the password database; are the secret holders trustworthy?) but it'd be a fun rainy day project to create. I've toyed with the idea of laser engraving metal cards with the password shares to make it more 'permanent.'