The solution to this is to go the old fashioned way. You make up a testament with a notary or lawyer. There you give sealed envelopes which will be designated to the people you want after you died, if you like to add an extra layer of security, you can start working with two layers, two envelopes which each hold a part of the keys or instruction set ... it also depends on the total worth of your assests
RE: What Will Happen To Your Hive If You Die?