As a number of companies push various strategies for the end-to-end encryption of payment card data, the Smart Card Alliance weighed in Monday with what it considers a simpler alternative: wider use of contactless cards.

The alliance, a multi-industry trade group in Princeton Junction, N.J., argues that contactless cards, which are already widely available in this country, make it unnecessary to store static information on cards' magnetic stripes and eliminate a weak link in the system, because contactless chip cards already incorporate dynamic cryptograms that change with each transaction.

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