Credit card reader is a simple optical character recognition technology card reader is only sensitive to the black so the card on the red part of the card reader is actually not recognize the original card printed on the black bar to help the card reader To confirm the direction of the card with the position of the pencil on the card filled with black blocks and printed black blocks together to form a black and white image of its principle with the binary "0" "1" similar to the card reader after scanning Pre-stored answers to the generated images are compared to the parts that are scored, Credit Card Reader and the discrepancies are wrong
The credit card reader has high accuracy
The credit card reader is mounted on a plastic card. The size of the card is the same as the magnetic stripe card, with one or several integrated circuit chips embedded in the top left. The chip is generally less volatile memory (ROM, EPROM, E2PROM), protection logic, and even CPU (central processing unit).
Credit card reader face-to-face trading is the "credit card" transaction, Credit Card Reader in the transaction, to the business to produce credit cards, businesses can get credit card number, contrast signature, in many cases, but also see photos, Credit Card Reader and then accept credit cards.