| 摘要 |
Data cards have multiple machine readable strips to facilitate the swiping of the card in a card reader. A data card may have two or more machine readable strips on one side or one or more machine readable strips on one side and one or more machine readable strips on the opposite side. Where two machine readable strips are on one side with one on the top of the side and one on the bottom of the side, then regardless of whether the top or bottom of the side is present at the reader, the swipe of the card will be successful. Where a machine readable strip is on each side of the card, then regardless of which side faces the reader, the swipe of the card will be successful so long as the machine readable strip of the side facing the reader is present. Where both sides of the card have machine readable strips at both the top and the bottom of each side, then top or bottom of either side may face the reader and result in a successful swipe.
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