PS I just ordered the Garmin InReach Explorer+. It allows a breadcrumb trail as well as SOS (straight to emergency services) and custom texts, so you can tell your point of contact, "I'm running late but expect to be home just after dark" or whatever. You can even interact with the SOS people to explain the exact situation so that they don't send an outsized response team. It's not cheap, and you have to pay a monthly subscription, just like a cell phone (but unlike a cell, SOS doesn't work unless you're paid up). I got a little nervous during my last hike, realizing that I was alone, I could easily twist an ankle or worse, the route was not well marked, I was out of cell service, and there was no evidence of other humans on that section of the trail. (I took heed and turned around - I plan to hike it next week with another human.) Eric can also use it if, dog forbid, he crashes while flying. Most of my outdoor recreation is solo. Most of it is also in areas with a lot of other people, and for some reason I've always been with other people when I've been hurt, but .... I would feel pretty stupid being gnawed on by a mountain lion or freezing to death overnight for want of such a device.