My wife and I use 1Password. We know each other's master passwords. In 1Password we have a note that lists all of our key info: bank account numbers, etc. I ha

My wife and I use 1Password. We know each other's master passwords. In 1Password we have a note that lists all of our key info: bank account numbers, etc. I have a scheduled task that reminds me to review the note at least once a year. When we went on vacation this summer I came up with a temporary mechanism to give our daughters our master passwords in case anything happened to us. The mechanism was set up so that they'd both have to participate to recover the secret. It was also set up to self-destruct in 30 days. That was the temporary mechanism. The permanent mechanism will use secret sharing (https://en.wikipedia.org/wiki/Secret_sharing https://en.wikipedia.org/wiki/Secret_sharing). There are many implementations available; I want to self-host one so that we aren't relying on anyone else. (There's no server component; a static site would be good enough.) We plan to use an "any 2 of 4" setup; any 2 of 4 trusted people could, working together, recover our master passwords.