[fmajid]

In the US there were incidents with truckers using illegal jammers to defeat their employers’ GPS trackers:

https://www.cnet.com/culture/truck-driver-has-gps-jammer-acc...

[yencabulator]

It's not immediately obvious to me that a jammer employed on the surface will affect planes going overhead at 30,000 feet. Such consumer GPS jammer products will probably have better customer satisfaction if their range is less than several miles.

[galangalalgol]

I read about the same thing affecting flights at Heathrow.