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Can card information be read without the cardholder knowing it?

April 26, 2017card cardholder KNOWING read

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Can card information be read without the cardholder knowing it?

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No. A cardholder must deliberately use their card at the point of sale: Visa contactless cards need be within four centimeters of a reader and correctly oriented to be read. In addition Visa Contactless transactions require specific information, including a unique transaction cryptogram using the highest level of authorized encryption.