[KarlInOhio]

Gostomelsky wanted to be able to identify exactly who was doing the broadcasting, ... and the signals sent by tire pressure monitoring systems. The last one is particularly novel—car tires wirelessly broadcast a unique number to the car telling it if the pressure in the tires is getting low; his device picked up on that transmission, letting him identify particular cars.

Great, something else to jam to stay anonymous. My car is from the last year before radio air pressure gauges were installed.

[DUMBGRUNT]

My car is from the last year before radio air pressure gauges were installed.

Not all of them used RF.

The anti-lock brake system knows if the wheels are turning at the same speed.
Low-pressure tires turn at a different speed from the others.