I've been thinking about something like this for a long time, but I've never come to a solution where I'm fully comfortable with the technology to fully trust i

I've been thinking about something like this for a long time, but I've never come to a solution where I'm fully comfortable with the technology to fully trust it. There's too many "What if?"s. The biggest one being: What if their system glitches and mistakenly sends out emails even though I've been checking in? What if I lose access to my email account? What if I end up in jail (regardless of reason) and can't hit the switch? What if they get a subpoena for the information contained within the emails? What if the service goes down? I'm under 30 - it's unlikely anything like this will be around for 50+ years. To have a fully safe and secure Dead Man's Switch you would need more than just one layer of confirmation, and more than one layer of failsafes. My thought so far is: A service such as this one, except instead of an email with your secrets, it would simply release private key to certain key individuals. In said email would be only the key, and nothing else. This would have to be somewhat tech-savvy individuals that would know the significance of the key upon getting it. The email should come from my own personal address. In my will I would entrust a different set of individuals (immediate family, etc) to one or more lockboxes contained an encrypted drive (HDD, SSD, flash drive.. something resilient.. maybe even the entire device.. maybe all of the above to protect against obsolescence.. ). The recipients of the first email would have to get in contact with these folks and mutually agree to decrypt the data on the drives. If the emails are sent by mistake, then all I have to do is seek out my lockboxes and encrypt with a new key. The people who got the key will probably be asking "wtf is this?" about. Had I been dead, them seeing an email from my personal address with a private key would elicit a much different response. Unfortunately this plan still relies on some technology to continuously log that I hit a button, which I don't like. I could misplace emails, I could lose access to my domain, if I do it via SMS, I could close my cell phone number... list goes on. The only thing I can think of that doesn't involve another piece of technology is trusting the private key to a person (or organization) who is impartial and bound to secrecy to only divulge the key upon a copy of your death certificate. Lawyer perhaps? Come to think of it, this could be a really cool add-on service to a life insurance policy. Instead of just cash, your beneficiaries get cash + vaulted information.