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QR code
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Wikipedia has an article about QR code. |
A QR code (abbreviated from Quick Response Code) is a two-dimensional matrix barcode found only on Duel Terminal cards. It is printed in the center of the back of the card.
Although it is printed on the back of the card, it is not considered to be a marked card as it not visible to the naked eye. A backlight is required to see the code.
