Bar codes are used to uniquely identify a specific type of item in the store. This eases checkout because the price can be automatically looked up. It eases inventory because whenever an item is sold and leaves the store, the known quantity of stock decreases. This makes tracking supply, sales, and sales trends of specific items easier.
Bar codes are used so that businesses can track their inventory. Once bar coded, businesses can track products in their warehouse.
Bar codes are used on almost all the products we see in stores. The store uses that bar code to automate and speed checkout.
1974
Bar codes identify the item and the price. They are used by a computer to provide the price and for inventory purposes.
Information communication technology (ICT) is used in supermarkets by keeping the freezers cold (digital control) reduce time and speed up serving of customers (getting computers to read bar-codes instead of typing in a string of numbers manually) and security. (computer calibrated computer controlled magnetic detectors for protection of booze/clothes/expensive goods)
Those newer bar codes are still bar codes, but they are 2-dimensional bar codes, and we call them quick response(QR) codes.
Bar codes no longer need specialized equipment to read them. Your smartphone has many apps that can read bar codes. There are apps where you can learn about the many types of bar codes and even generate and print bar codes of your own.
how can i get categories from newport pleasure ,so i can use my upcs bar codes,like a one time i send my bar codes in and they send me what i send for with my bar codes
The Treasury does not put bar codes on bills. In any case bar codes weren't used in 1974. You may have a bill that was altered by somebody using a bar code printer.
The first 2D Bar codes where used on Railroad Cars. Check the related link
Countries do not have bar codes. They may have calling codes, or postal codes, internationally recognised. Bar codes are usually for items on retail sale.
A barcode reader or scanner