Parallax RFID reader with Arduino for Oyster Card

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hello,
i'm trying read oyster card (rfid card used card pass subways in london: http://en.wikipedia.org/wiki/oyster_card) parallax rfid reader (http://www.parallax.com/store/accessories/communicationrf/tabid/161/productid/114/list/0/default.aspx?sortfield=productname,productname) doesn't recognise it. works rfid cards/tags parallax though. i'm wondering if it's possible read oyster card parallax rfid reader or need upload other code 1 used.

i tried codes tutorials below.
*playground's tutorial:
http://www.arduino.cc/playground/learning/prfid
*gumbo lab's tutorial:
http://www.gumbolabs.org/2009/10/17/parallax-rfid-reader-arduino/
*bryan chung's tutorial:
http://www.bryanchung.net/?p=322

in these posts, oyster card can read rfid reader seems not using parallax one.
*tinker.it's rfid tutorial:
http://tinker.it/en/tutorials/rfid
*proalias.com's flash arduino workshop:
http://www.proalias.com/2008/05/06/flash-arduino-workshop-2/

is there special treatment read oyster parallax rfid reader or not possible that?

i appreciate if situation.

the oyster cards use mifare rfid protocol, , parallax readers don't, can't read oyster cards.  the reader in tinker example sonmicro reader, can read mifare tags.  there's 1 id-innovations.com can it, id-20mf, if remember correctly.


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