Why was my card replaced with a chip card? Replacing your card with a new chip-enhanced card is one way we can help simplify your purchase experience as technology continues to change. Although magnetic stripe cards continue to be the most common type of card in the U.S., many other countries, especially in Europe, are switching to chip cards. Giving you a new chip card is one way we can help simplify your purchase experience when you’re traveling outside the U.S. We value your financial security. Your new card comes with advanced security because the chip technology makes it difficult for a fraudster to counterfeit your card.