I made the same thing seven years or so ago:
As for the trust issues, you can easily just say "look under the porch in my house", you don't have to reveal all the information there. Or, just encrypt things.
As for the trust issues, you can easily just say "look under the porch in my house", you don't have to reveal all the information there. Or, just encrypt things.
A problem with that is that people can have custom intervals per-message, so they can have one for "I'm missing for a day", one for a month, etc, so there's no "one" switch. I could make one, though, I guess.