I really don't think that it can be done, but I shall ask anyway. I want a method that permits me to give some data to another person, that can't be read until the time of my death. I do not want to have to rely on the honesty of that person to honor this trust. I know that there are legal means to accomplish this purpose, but that would entail factors that I don't want to have to deal with. Perhaps the best way to approach this is to encrypt the data on a password protected flash drive, but for that to work, the person would have to be given the password in advance, which would defeat it's purpose. I really don't care how it is actually done, if it is something that I can accomplish myself via my own computer, without any outside person or institution being involved. Is this a lost battle?