"Any method that can be misused to surreptitiously track people's movements…

“Any method that can be misused to surreptitiously track people’s movements without their knowledge is concerning,” EFF’s @cooperq told CNET. “But so are all of the technologies in modern cars that intentionally violate drivers’ privacy.” https://www.cnet.com/roadshow/news/hacker-threat-hiding-in-car-tire-pressure-system/