Oh, good, thanks.
I figured if I could put it in my carry on, I would slip it into the little foil bag to keep any stray signals from reaching it, or to prevent it from trying to take over my mind.

I have it in its original package, too.
So the rental agencies have no problem with me sticking the thing on the windshield and leaving residue, I guess. I thought about it, and said "Avis, you are just going to have to deal. I won't wreck your car; don't give me a hard time with the ez pass."
I have to admit I am addicted to the things. We have the E-Pass and SunPass in FL, and I love zooming through the lanes.
Thanks for the replies!