I've spoken to the Chef Technology Manager and the Chief Executive Director of E-ZPass for some research I did with their system [0] and confirmed that it is no

I've spoken to the Chef Technology Manager and the Chief Executive Director of E-ZPass for some research I did with their system [0] and confirmed that it is not 100% reliant solely on the transponders, and that they do use license plate readers as well. [0] https://github.com/kwesthaus/ez-sniff https://github.com/kwesthaus/ez-sniff