A card may store data on an integrated circuit housed within the card. The card includes at least two antennas that are configured to transmit the data. The card may be configured to send a first set of data through a first antenna and a second set of data through a second antenna, where together the two sets of data can be used to execute a transaction. The integrated circuit may be configured to create an authentication factor based on a variable received by an antenna and transmit the second set of data along with the authentication factor.
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