This is very cool tech, but it seems like a niche use-case. It's not made for consumers, and the vast majority of IoT devices barely move, let alone between countries. But , if I were working for a haulage company and was interested in tracking, say, truck location, speed etc across the whole of Europe I could see this being a great way to do it.
I am experimenting with GPS luggage tracking hardware with simple live-updates. This is potentially a great use-case.
WiFi I suppose, using a mapping from BSSID -> lat/long, like Mozilla Location Services or Combain.
What's the power consumption like from attempting to get a GPS lock? Luggage presumably spends most of it's life indoors. I imagine a WiFi scan uses less power than attempting to acquire a GPS signal.
I'm a hobbyist when it comes to hardware/IOT, I've been working on something similar but for RV's instead of luggage. Much harder constraints when it comes to luggage! RVs have power and room to spare.
Oh, you could put a small generator on the luggage wheels, to charge it a bit while wheeling the luggage around!
Sounds like a fun project.