Altered cards are made from actual cards. The original stamped data is melted down or pressed out. Then, the card is re-stamped with legitimate account numbers, names, and expiration dates, which have been illegally obtained. On altered cards, the letters do not line up well and are usually irregular in size. Some credit card companies help merchants identify altered cards by making an authenticator machine available to merchants. The machine authenticates or verifies certain information that is encoded on the back stripe on the back of the card.
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Altered cards are made from actual cards. The original stamped data is melted down or pressed out. Then, the card is re-stamped with legitimate account numbers, names, and expiration dates, which have been illegally obtained. On altered cards, the letters do not line up well and are usually irregular in size. Some credit card companies help merchants identify altered cards by making an authenticator machine available to merchants. The machine authenticates or verifies certain information that is encoded on the back stripe on the back of the card.