Yeah, it's also worth noting that Starlink and a few other commercial companies are offering text-based services to _unmodified_ cell phones (no special sat hardware), which means they can get signal, IMEI, etc. LoRa is also used as transport layer for some cube sats and edu type sats. A new company just tested Bluetooth-to-sat. So even on the commercial side there are overhead sensors that you may need to be concerned about on the triangulation front. It's a hard problem to crack...