Our family visited NYC December 2015 and used the ...

Our family visited NYC December 2015 and used the subway many times daily. We bought the 7 day unlimited pass for $32 and got more than our money's worth. I will definitely do next time we are in NYC. An improvement that should be made is with the cards -- they are paper -- need to be plastic. We were constantly in rainy weather and had times the card wouldn't swipe. Also, the subway signs on road did not tell which direction the 6,4,5 were going -- like downtown, uptown -- and some stations did not have a bridge underground to cross over. Maybe I missed something, but the signs leading from the street looked EXACTLY the same, although they definitely were going different directions.We had swiped through -- realized we were on wrong side -- and then couldn't swipe in on the correct side. Overall, the subway is a great way to get around NYC.