> What is concerning is that vehicles appear to broadcast a MAC address.
replySomewhat related: 'Your car’s tire sensors could be used to track you': https://networks.imdea.org/your-cars-tire-sensors-could-be-u...
Reading the translation of the talk, public transport vehicles have a persistent MAC but for private cars the MAC address changes every 15 minutes.
replyAs discussed in the video they are not resetting the packet sequence number though, making it easy to match them with the other data transmitted.
replyThat still doesn't seem very private.
replyFor a vehicle with a highly visible unique identifier on the front and rear? In my country basically every private carpark has ANPR cameras, the tech is dirt cheap now.
replyEven our tires blast out IDs.
replyhttps://www.rtl-sdr.com/exploring-the-privacy-risks-of-tire-...
Particularly anywhere rural or off the beaten path
replyYou wouln‘t really have the kind if hardware there. The communication relies on a multi hop mesh that would‘t work anywhere without sufficient coverage.
replyYou do know you have a unique ID displayed on a big tab on the vehicle, right?
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replyWhat about the traffic lights on the map do they also have transmitters?
replyYes, they also have transmitters. The traffic lights send out MAPEM and SPATEM messages. They describe the layout of the lanes at the intersection as well as the red/green phase timings of the signal.
replyIn Graz, the city where the authors live, there are 165 of such signals planned.
This should be a top level comment as it has a ton of useful info and can be voted to the top.
replyDid they re invent APRS?
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