this post was submitted on 29 Feb 2024
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Privacy
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So how do newer cars send this info back? Do they have their own transmitters? Or are they uploading data via my wifi while parked in my garage? If so, can I just block the vehicle's MAC on my network?
They have their own transmitters over cellular network.
If you have a car that uses cellular for in-car wifi or any other services (such as Onstar or competing services) that's the way. And it's possible (though I have no idea if it's done) that they could include a cellular connection that isn't available to you as the customer, but is used only for this purpose.