A barcode is an encoded image, usually displayed with black and white lines of changeable width that contains vital information which is easily readable by a machine. Barcodes store information using symbols that can vary from lines to dots. These codes carry some hidden information about the organization like country name, name of the organization, product description, rates etc. Barcode is a machine-readable image which quickly and accurately identifies a product. It is a unique global identification system which is used in the supply chain for articles like the product, logistic goods, entities of trade, location, documents etc. It is widely used in retail supply chain management. The majority of the retail stores throughout the globe are using barcode system for product identification and its management. With the advent of industrialization, there is an increase in the products and its varieties. Due to the tremendous growth of varied products, its number and frequency in supply chain manually capturing product information is a meticulous task. Thus a need was felt to have quick and precise identification of the products in the supply chain which has led to the development of Bar Code. Finally, it was designed in 1970 by George J. Laurer in the U.S.A.