Feb 28, 2013Unlike bar codes, which can only identify a SKU number or product type, RFID tags combine a product code with a serial number to uniquely identify each item. This unique number allows tags to be read multiple times during inventory without confusion or inaccuracy. Properly writing or "encoding" these unique EPC numbers into RFID tags, either before or after they are applied to items, is essential. Traditionally, encoding was combined with variable da...