What That Chip in Your New Credit Card Means for You

Better security and, for a while, confusion at checkout. Here's what you should know.

A customer makes a payment using a card with an EMV chip.

Photographer: Simon Dawson/Bloomberg

The credit cards in most Americans’ wallets are pretty much antiques. They’re easy to counterfeit, thanks to magnetic strips that rely on basically the same 1960s technology used in cassette tapes.

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