Before revision: The GS1 DataBar barcode often cannot be scanned at the register during checkout, and in many cases a traditional UPC/EAN barcode is placed on the coupon along with the GS1 DataBar barcode in order to allow scanning of the coupon at the register .
After revision: During the early years of its implication, GS1 DataBar barcodes often could not be scanned at the regwaster during checkout, and in many cases a traditional UPC/EAN barcode is placed on the coupon along with the GS1 DataBar barcode in order to allow scanning of the coupon at the register .