Barcode Card has a Reference Number and ID data encoded in it and that data is used by a computer to look up all specific information associated with the data. Barcode is a machine readable alphanumeric code that consists of different widths and spacing. Barcode Cards are used on barcode readers. They scan the barcode, decode the information and transmit it typically to a computer. The Barcode Card can be availed from us at the most competitive prices.