There has been talk of that for as long as I can remember. It's not a difficult calculation; they know what time you enter and exit the turnpikes and how far apart the gates are.
There was talk of that in a news article about twenty five years ago. The plan was to issue a citation at the arrival gate when you stopped to pay your toll.
I have a pike pass too. The only time I ever use it is to go to Wannamachers. I avoid the local toll roads as much as possible.