RFID tags are like the transponders used on many trucks. A roadside antenna sends a signal to the RFID device, and the device sends back its serial number. So yes, that roadside system will be able to identify your car, and use your ID number for things such as toll roads, security gates, or buying a burger at McDonald's. The RFID tag can also receive a message from the roadside, and display it on a device in your car: a display screen, a flashing light, or a creepy computer voice talking to you. It is not the same thing as having a GPS unit with a satellite transmitter, like OnStar. You have more potential to be tracked by using your cell phone. One more reason not to talk while driving. "Guns don't kill people, cell phone drivers do!"
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RFID tags are like the transponders used on many trucks. A roadside antenna sends a signal to the RFID device, and the device sends back its serial number. So yes, that roadside system will be able to identify your car, and use your ID number for things such as toll roads, security gates, or buying a burger at McDonald's. The RFID tag can also receive a message from the roadside, and display it on a device in your car: a display screen, a flashing light, or a creepy computer voice talking to you. It is not the same thing as having a GPS unit with a satellite transmitter, like OnStar. You have more potential to be tracked by using your cell phone. One more reason not to talk while driving. "Guns don't kill people, cell phone drivers do!"