Unfortunately the cards are programmed to the PGM; "blank" cards do not exist in normal circulation and even if they did they'd be useless.

Moriwaki-man can get cards programmed to PGM's (as well as made into HRC cards if required), see his link in the supporting vendors section, I think you need to supply a card.
Bat Motorcycles used to be able to get the cards new if you supplied your PGM number, it's on the card and the PGM but they're now closed.

If you want an old card to get reprogammed either to normal or HRC spec I've got both an HRC card and a normal card, they're from a dead PGM...open to offers.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread