Over here in the EU any cellular device should contain a SIM card which must be registered to someone or some company, therefore it can be used to track the owner; is that different in the US? The article doesn't mention any SIM card present. If I discovered such a tracking device in my car I'd immediately look for the card, get its number and find the owner.

Also, it would be nice to fool the GPS through a jammer that emits false signals in order to make it report a fake location, after placing cameras at that place to record whoever shows up.

> "Also, it would be nice to fool the GPS through a jammer that emits false signals in order to make it report a fake location, after placing cameras at that place to record whoever shows up."

First : don't confuse jamming with spoofing. Jamming is extremely easy to perform by any idiot, while spoofing GPS is significantly harder https://archive.fosdem.org/2019/schedule/event/sdr_gps/

Second : keep in mind that both of them are actually illegal in most countries, and besides unless you exactly know what you are doing it's fairly easy to jam/spoof on much larger areas than you would intend to ! (and GNSS is not restricted to consumer products and maps but are used in a lot of industrial/serious applications so it can actually have consequences)

You are very wrong. Spoofing GPS is downloading a file, and then running a commandline program with a hackrf attached. The *only* hard part is getting a HackRF or other TX capable SDR.

Download and compile https://github.com/osqzss/gps-sdr-sim

Download today's ephermis https://cddis.nasa.gov/archive/gnss/data/daily/

run:

gps-sdr-sim -e $EPHERMISFILE -l $LAT,$LON,$ALT

And, if you're nearby an airport, you're violating felonies with FCC AND FAA.