[vorpalhex]

Yeah, a smartphone based deadman is not great for the reasons listed. Ideally you would have key escrow running in a few places ala Shamir and then already have the data widely distributed (bittorrent, ipfs) but encrypted.

You can still handle check-in via device but you need a 2nd factor of something only you know, with false values that will trigger a dispersal.

[rmoon]

I guess we are all rightly used to seeing the dangers first, there is no deadman, there is one very important reason for me that made me see how difficult it is for some people to defend themselves when all you have is information.

[rmoon]

I reply myself, yes!, it could also be used as a Dead man's switch. Sorry, my bad!