Do you have a dead man's switch or fail safe and how does it work?

In case of untimely death do you have some kind of fail safe or dead man's switch setup? If still unclear imagine recordings left by Tony stark for his wife & child in case he died. A switch triggers after sometime you die and maybe shares saved recordings/passwords/bank details/insurance policy with loved ones, deletes your browsing history & bricks your hard drive, sends some fuck you mails to some cunts you have known in life etc etc.