Defense contractor Leonardo is promoting a new technology called SignalTrace that will package plate cameras with sensors that can scrape unique identifiers tied to your smart devices and make that data available to law enforcement.
Police, border security, and other government agencies already comprise Leonardo’s customer base, and with this technology, those clients seek to correlate footage from these cameras to phones, tablets, wearables, AirTags, and, naturally, the electronics inside cars themselves.
If SignalTrace can pick up your Bluetooth headphones, you can be sure it’ll also be looking out for your vehicle’s 5G hotspot, infotainment system, and even its tire pressure monitoring sensors. The company includes pet microchips as a potential entry point to tracking.
I think they bounce rf waves off of them. Same as with money, larger bills have a magnetic strip, they can bounce rf waves off of them and see how much cash is out there if not shielded.