License Plater Readers (LPR) at a toll both are just a camera that reads your license plate. If the license plate is visible to read by the human eye, then the LPR can read it.
When you go through the toll booth, the camera not only takes a picture of your license plate, but it also takes a picture of the driver's face. If the license plate cannot be read your license plate for whatever reason, then the image of the vehicle driving through the toll booth is flagged for manual review by a human.
Your best bet is to have a device that covers your license plates with an opaque cover so your license plate is not visible at all. And wear a mask on your face.
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