Whenever I try to think about that my mind races too far ahead, then I worry about the technical limitations and I get a little discouraged. So I try not to an

Whenever I try to think about that my mind races too far ahead, then I worry about the technical limitations and I get a little discouraged. So I try not to and take it one step at a time. But to somewhat answer your question: a personal safety device that is always active, not something that tries to detect an emergency situation (which I find very hard) and only then activate. In my experience, even the last known location is better than nothing at all.