I got stopped after walking through one of the gates. They purposely left one of the 2 gates/terminals/whatever open as trains were arriving. The LCD screen on the 2nd gate was red. So I figured maybe it wasn't even in service anyway. Like most average people would, I went through the open gate so I wouldn't miss the train, and this lady comes over with her badge.
I showed her my pass and even went back and "paid" my fare, which is pre-paid for the month.
Anyway, I had to show her my ID and receive a ticket or get arrested.
Either that or brace for the "PAY THIS $15 PLUS LATE FEES OR ELSE WE'LL BAN YOU FROM THE T FOREVER EVEN THOUGH WE HAVE NO WAY OF KNOW WHO YOU ARE" letters.