Seems like there should be a market for N of M key encrypted post-death documents.
e.g. have a 3 of 5 key that can decrypt this document with all of your personal secrets. 1 key for yourself, 2 with loosely connected family members, and 2 with different attorneys that have legal obligations to only use the key on your verified death and as specified by your cleartext will.
This kind of scheme would be highly resistant to failure, since if any one key gets lost, you can discard and regenerate the ciphertext with new keys, and possibly change the secret information (e.g. passwords) if you're worried about future compromise. It's also highly resistant to collusion since it would require a malicious family member or attorney to collude with at two other parties against your will in order to compromise your secrets, all while not knowing exactly of what value those secrets are.
e.g. have a 3 of 5 key that can decrypt this document with all of your personal secrets. 1 key for yourself, 2 with loosely connected family members, and 2 with different attorneys that have legal obligations to only use the key on your verified death and as specified by your cleartext will.
This kind of scheme would be highly resistant to failure, since if any one key gets lost, you can discard and regenerate the ciphertext with new keys, and possibly change the secret information (e.g. passwords) if you're worried about future compromise. It's also highly resistant to collusion since it would require a malicious family member or attorney to collude with at two other parties against your will in order to compromise your secrets, all while not knowing exactly of what value those secrets are.