US Patent 10438032 Data-securing chip card construction

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. Antennas of the card may be configured to transmit the data in different directions as a result of a signal-blocking layer embedded within the card that isolates respective antennas from electromagnetic signals originating from a direction on the opposing side of the blocking layer. 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.