One recent deadman switch info release system: https://news.ycombinator.com/item?id=42647872

When I'm gone (Fraser) https://www.goodreads.com/book/show/6943602-when-i-m-gone

Read this when I'm dead (Presley) https://www.amazon.com/Read-This-When-Im-Dead/dp/0988342553

Humberto Cruz, "A family records organizer", in the Boston Globe, 2007 ---- https://archive.is/SjTWI "In essence, "Read This If I Am Dead" is a living, loving, and constantly evolving little book I write for my family. You can do the same..."