Idea for a website.
Problem – you want some action to be taken in case of your death or other event. You don’t want this action to be blockable by third parties.
Solution – you have distributed the information across many participating users computers, the ‘key’ to which will be published if you do not enter the correct code e.g. once-a-week before 12:00 Saturday.
I believe that wikileaks and others have done a similar approach. They put the encrypted files out as a torrent. Then if the website is taken down, or some other aggressive action by the government against them, them publish the encryption key somewhere. This idea is essentially the same, but make automating it for simplicity and making the key-release automatic.