@Jarsa nice idea! I would like to use this idea as an onlinetracking system for myself. As i do outdoorsports, sending my last location to my own server is a good idea.
In Android (9) it was very hard because of power limitations. As soon as the screen is off, everything goes to powersaving. And gps eats the battery as the cpu stays always on...
This could be the limiting problem here too: the battery will be drained like hell...
Is there a way to reduce power consumption?