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Not all cars have active TPMS. my Volvo xc90 had them but in later models they switched back to passive ones. So it is not even a given for higher end models.
That's not quite the end of the road, though: The tires themselves often have RFID tags embedded. https://rfid.michelin.com/what-is-rfid/
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Don't worry about Tesla's being tracked. Via Bluetooth this has existed for at least 7 years [1] (was mentioned on HN as well). Tesla know (also for 7 years), Musk doesn't care 'since license plates can also be tracked'. I used it in train stations, and get hits when passing highways via train or bus. Esp. fun if you stand still due to traffic lights or traffic jam, since you can try to get a visual. The only lesson…
> Not allowed in EU. I'm surprised, I know for a fact that some stores definitely have the ability to do that on their hardware.
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How did this play out? Were the ads from an app from the store that you had installed? Or did they spam you over SMS because they associated your bluetooth info with an account you have with the store, or contact info they bought from a third party?
Neither. They used to discover your device and then send a Bluetooth push. "Would you like to receive a file from …" It was usually an image, movie, or audio file.
I've never seen a prompt like that on my phone and would not have guessed this.
This is not very different from collecting visual cues. You can notice a delivery van arriving. You can see the driver's face, same with passers-by. The biggest difference is that a camera needs to be more conspicuous, while a BT receiver can be invisible and undetectable. Much cheaper, too.
I have an ESP32 Cam in front of me right now. I think I paid maybe 8 bucks for it. If I wanted to, I could very easily hide the tiny camera in my front door, and use it to both collect bluetooth and wifi metadata (including MAC addresses) and correlate images/faces to MAC addresses when people pass by close enough so that I can identify them later from longer range wifi/ble detections. (I actually do plan to install…
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You can do this for much cheaper - all four of your tires are broadcasting a unique ID to report tire pressure, the radio to pick it up is cheap (because cars), and TPMS has no facility to randomize or otherwise secure this.
It’s actually even easier, your car has a plate on the front with a unique ID that a camera scans, often to automatically track your park time for ticketing. I can’t really care about obscure Bluetooth tracking when every business has CCTV doing facial recognition.
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> I believe shopping malls often use such signals (wifi, bluetooth) to track what your travel pattern through the mall is. They know what section of the store you spend most of your time in and what storefronts you stall at. Yes, I remember Cisco had a product like this all the way back in 2011. They could pinpoint a customer to an exact position inside a store using triangulation, they would know which shelf you spe…
iBeacon. They know what shelf you're standing in front of. What products you touch and read. Ever been in an Apple store? Look up. In the dark voids between the edge-to-edge backlit ceiling. There are secrets there. Watching you.
> This isn’t about paranoia. It’s about understanding the trade-offs > Bluetooth mesh networks—no internet required, no servers, no phone numbers LLM slop. Both the article and the Python script
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Don't worry about Tesla's being tracked. Via Bluetooth this has existed for at least 7 years [1] (was mentioned on HN as well). Tesla know (also for 7 years), Musk doesn't care 'since license plates can also be tracked'. I used it in train stations, and get hits when passing highways via train or bus. Esp. fun if you stand still due to traffic lights or traffic jam, since you can try to get a visual. The only lesson…
> Not allowed in EU. I'm surprised, I know for a fact that some stores definitely have the ability to do that on their hardware.
[dead]
I suspect the e-scooters left around town (Lime, Bird, etc) are massive Bluetooth / LoRa dragnets. You pay them to increase coverage or visibility to social hot spots.