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To protect against fraud, U.S. banks will be issuing credit cards with small computer chips. But some experts say using a PIN to complete a transaction is more secure than a signature. iStockphoto hide caption

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iStockphoto

U.S. Credit Cards Tackle Fraud With Embedded Chips, But No PINs

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Apple Pay is demonstrated at Apple headquarters in Cupertino, Calif. Marcio Jose Sanchez/AP hide caption

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Marcio Jose Sanchez/AP

Will Apple's Mobile Wallet Replace Your Leather Wallet?

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Kmart says it has removed malware that had infected its checkout registers in stores. The company believes the malware may have been in place for about a month before it was detected. Rachel Murray/Getty Images hide caption

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Rachel Murray/Getty Images

Apple CEO Tim Cook speaks in Cupertino, Calif., on Tuesday. The company unveiled a new mobile payment system called Apple Pay, which uses security built into the latest iPhones. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Lunch at the West Salem School District in Wisconsin. Michelle Kloser/ for NPR hide caption

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Michelle Kloser/ for NPR

Cash Or Credit? How Kids Pay For School Lunch Matters For Health

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