Plates are cloned in 5 minutes.... most people are going to leave their tags in the car. *smash*... I see a nice clear highway for a Cash-heist getaway.
So if I remove my tag from the car and put it in my bag, and then get a lift from a friend - does he get penalised at the gantry 'cos my tag responded too?.. cos the tag doesnt match the car.
/me curious
I can't see any value in stealing an e-tag, except if you own a car that's identical with the same plates - so why would one remove your e-tag from your vehicle, apart from the shame of owning the tag?