BioStar supports four types of cards: EM, HID, Mifare CSN and Mifare Template cards.
However, you can delete EM, HID and Mifare CSN cards only. It is impossible to delete a Mifare Template card since all the necessary information is not stored in the database, but in the card itself.

1. Go to the User page, choose a user from whom you want to delete a card in the User pane and click the Card tab.

2. Click Card Management, enter 0 in the Card ID field and click OK.

3. Click Apply to complete the card deletion process.