I tried mounting my EZ Pass under the frunk lid and inside the glove box. Neither triggered the reader on the Bear Mountain Bridge. The kind and patient attendant there explained that different readers are of different strengths and orientations (he suggested turning the device 90 degrees under the frunk lid on my next try). I didn't bother as each time I created a long angry line behind me as we waited to get the gate open. Instead I mounted it in a more conventional arrangement on the inside of the windshield, works every time. Takes 2 seconds to pop in the glove box which I get into anyway to mount my GPS. Not any trouble.
However I wish BRP and other bike manufacturers would get smart and created a guaranteed readable spot in the bike to mount such transponders where it can be locked up like a car is and not need to be mounted and removed (listening BRP?) I like to use my Spyder to tour and often hit toll roads. Would be nice to have a preset workable location.
SpyderWalter