Were you able to figure this out?.. i have the same problem. does your led turn red at some point? from what i read it has to. make sure u have the pin sout from the card to rx in the arduino(or the pin u used for rx in the Newsoft serial.) that way it changed the led to red.. however, i havent been able to read the tag... so if you perhaps have something.. pleaseeeeeeeee. help