UPDATE After originally starting this thread with the suggestion that an EZ Pass (NY/NJ) could be successfully placed on the windshield (2016 Model S) to the right of the rearview mirror on the black painted area of the windshield, I have to report that this position only was working about 75% of the time, so I had to remove it. I have two final solutions for all of you who refuse/prefer to not mount a front license plate:
1) Get an external EZPass (looks like a black bar) and ask your Tesla SC if they would pop the front nose cone for you and mount it to the front bumper support behind the nose cone. My SC used double-sided tape and zip-ties and it has been working like a charm.
2) Make sure that you go to the EZPass website for your state and register the license plate of your Tesla. This way, on the outside chance that the EZPass readers can not read your transducer, their computers will match the license plate and you won't receive any warnings or fines.