Virtually every product you buy in a retail establishment has a barcode or UPC symbol as of 2011. Barcodes are black and white lines of varying widths followed underneath by a series of numbers. You can find barcodes on price tags or on the bottom of most boxes. Retailers and suppliers use barcodes to track an item’s manufacturer, the item type and item serial number. Retailers use scanners to read the barcode and charge you the correct price. Because lines on the bar code are read by computer scanners, the easiest way to decode a barcode with your eyes is to analyze the corresponding numbers under the bar code. Writer Bio
