Just gonna put this here..
My next Android app is a deadman switch. The app runs on your Android phone, talks to a api on your own hosted server (only requires php serverside but for now all serverside code is just for Linux).
Should your phone be lost, you will receive emails allowing you to extend the timer.
The intention with the app is to automate things like sending emails, reconfiguring servers etc should something happen to you.
Let me know if you have interest in testing it.