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Safer Payment Cards

Two bank smart cards are displayed in London, Friday, Sept. 9, 2011. Smart cards with built-in chips, are the equivalent of a safe: they can hide information so it can only be unlocked with the right key. Because the important information is hidden, the cards can?t be copied. The cards are recognizable by the fingernail-sized gold contacts embedded on one side. Through the contacts, a chip inside the card can transmit information to a terminal when slid into a slot. (AP Photo/Martin Cleaver)