The computer might not be recognizing the card reader as it should. If it has been scratched, it might not be repairable. If it is dirty, wipe it clean with a dry, soft cloth and try again. Also, these kinds of cards can be kept inside wallets or purses and be scratched or dirtied. They break easily from the wear and tear of daily usage.

Because a smart card is a microchip, it is very delicate and easy to break. If a smart card reader that is attached to a computer via USB stops reading smart cards altogether, the problem might not even rest with the smart card reader. Here are some common problems have risen with the many uses of smart card readers. Depending on the purpose of readers, they can be designed only as a relay of information to its main host (the computer) or to decode information and act on that information independent of a host. Smart card readers mainly act as a medium between a computer or a terminal to the smart card.

Whenever the credit card is swiped, the reader will be able to access data from the smart card. An example of a contact smart card is a credit card that has the smart chip implanted in its plastic.

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