one
System, method, and apparatus for a dynamic transaction card

Abstract:

A dynamic transaction card with a display for providing barcodes is described. The barcodes can be generated by driving individual light emitting diodes (LEDs) of the display at frequencies of greater than 50 Hz. Due to the high frequency, the barcode can be readable by a barcode scanner, while remaining invisible to the human eye. The barcode can also be generated by driving a first set of LEDs at a different frequency and/or time interval than a second set of LEDs. Light waves from the first set of LEDs can constructively interfere with light waves from the second set of LEDs to create spatial voids readable by the barcode scanner.