Just to add, some can identify Bluetooth signals, and I wouldn’t be surprised if identification via direct TPMS (tire pressure) is added eventually.

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WaitWaitWha 3 hours ago | parent | next [-]

I have never seen TPMS ID trackers as they change relatively frequently and there are passive ones too; not to say they do not exists. Built-in BT ID of a vehicle or mobile phone rarely does.

Bluetooth and toll transponders (e.g, EZ-Pass, FastTrak) have been tracking things for decades.

First hand experience in operational rooms where both Bluetooth and the transponders are used for "traffic management" in Delaware and Washington DC. The readers are not at toll gates (only). they are sprinkled throughout highways and "high interest" areas. And, yes individual vehicles can be identified throughout their movements that is the very purpose of tracking so they can see the speed and flow of individual vehicles "to adjust intersection lights".

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unsnap_biceps 2 hours ago | parent [-]

> they change relatively frequently

Aren't they static for the life of the sensor which is ~10 years?

	▲	WaitWaitWha 35 minutes ago \| parent [-]
		Yes, you are likely right. I do not know that much about TPMS changing, only anecdotal. Every time a rim is messed up or the device fails the TPMS would change. They might have been wrong when they told me why they "just" track car BT (and EZPass).

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bix6 3 hours ago | parent | prev [-]

What do you mean direct TPMS ID? Read all 4 tires as a fingerprint? Can you do that remotely at speed?

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Terr_ 3 hours ago | parent | next [-]

I think the main difficulty is how infrequently the devices broadcast.

You don't need to look at all tires to make a match, but the more a car has, the more likely one will be broadcasting during the window for detection.

	▲	Barbing 2 hours ago \| parent [-]
		Tire kicking suddenly a sign of privacy mindedness, not rude Craigslist window shopping behavior

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garciasn 3 hours ago | parent | prev | next [-]

https://networks.imdea.org/your-cars-tire-sensors-could-be-u...

Sort of. The problem isn’t necessarily the speed but the range. But it could be used. Bluetooth and WiFi tracking would be more likely in most real world scenarios.

	▲	linkjuice4all 3 hours ago \| parent \| next [-]
		You could just mount them to a bunch of fleet vehicles [0]. Hopefully they don't pick up any stray signals from nearby vehicles moving at low speeds (relatively) around them or have any AI, API, or Cloud integrations to combine that data with other mobile and stationary telematics. [0] https://www.revvo.ai/product/revvo-connect/
	▲	tonyarkles 2 hours ago \| parent \| prev [-]
		Honestly, I was shocked by how many of them were successfully decided by rtl_433 running on a cheap RTL-SDR inside my house. I don’t live on a busy street. It picked mine up first but snagged a bunch more through the evening

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qmr 2 hours ago | parent | prev | next [-]

Yes. I'll bet fifty of what you like there's a demo on YouTube.

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koolba 3 hours ago | parent | prev [-]

> Can you do that remotely at speed?

Even if you can’t, if you put enough of them by stop signs and traffic lights it’s a non-issue.