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PIN or Signature: Which Card is Smarter?

Smart cards — already used for credit transactions in about 130 countries — are coming to America. But it’s going to be several years before we all have these fraud-resistant items in our wallets. Which technology should new "smart cards" use? Some countries use chip-and-PIN, while others use chip-and-signature. The nation’s banks have slowly been issuing these new cards for a few years, but there's a new sense of urgency because of the recent rash of data breaches at Target and other retailers.

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