Greg,

I already tried that but with no success .

I bread-boarded up an RFID antenna and tried to read the sensor off of a over-sized $25 Hard Rock chip that I have (which I thought was supposed to have an tag in it). My unit wasn't able to read it. (My unit does read two other RFID cards that have a tag embedded in the card so I know my reader works).

http://www.parallax.com/detail.asp?product_id=28140