Who inherits my passwords?

This is a problem I've been thinking about a lot.  I have a significant list of passwords, PINs, passphrases, and bits of profile information for the sites and applications they get used on.  My partner (or at least my estate) should have access to the most up to date version of this information.  It gets changed regularly and this means a safe deposit box isn't really the best choice.  What I need is a kind of digital escrow service that I don't have to hand my keys over to.

( Thinking about how to do this )