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What is a bar code used for?
Barcodes are used for...
- keeping track of the large number of items in a store
- tracking of item movement, including rental cars, airline luggage, nuclear waste, mail and parcels.
- individual bees for researchers to track the insects' mating habits.
- tickets which allows the holder to enter sports arenas, cinemas, theatres, fairgrounds, transportation etc.
- for advertisement, information services etc. (for mobile tagging)
- and can also be used for the game thing where you get creatures when you scan a barcode, those things are cool!
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reading printed barcodes
The graphic structure of a bar code is very simple; it comprises only dark areas and light areas which humans see as the familiar "bars". These bars form a binary system… of representation, in other words the barcode symbol has only two states -- "light" and "dark" --- there is no third state. The graphical simplicity means that it is very easy to place a barcode onto an object. Barcodes can cheaply and easily be printed onto many different materials. Because of this graphical simplicity it is also quite easy to create an electrical gadget that can "see" the barcode. The electronics of the gadget needs to be able to distinguish between "dark" and "light" and that is not technically difficult. Within the software of the gadget the barcode can be represented by a binary numbering system "1" and "0". Consequently it is very easy to interpret that number and convert it to the letters and digits that we humans usually read. Additionally a barcode can suffer quite a lot of damage before it becomes unreadable. The machine reading the barcode only needs to find a straight line (any straight line) between one end of the bar code and the other. That line can be diagonal. If it is possible to draw a line that crosses every bar and does not cross any smudges or gaps then the bar code can, theoretically, be read. There are many different bar code formats in use. Some of them can only represent numbers and some can also represent letters. Some barcode formats also contain extra information that can be used to check that the barcode has been read correctly. This means that if part of the barcode label is missing so that some bars are missing, the barcode read will know that what it is seeing is not a valid barcode. The machine that is reading the barcode can know immediately if it has seen a valid barcode or not. If it cannot see a valid barcode then it can immediately alert the operator of the machine so that they can correct the problem in some other way. These characteristics mean that in many situations a barcode is a very reliable way to transfer information because it is quite easy to avoid false reads and often even damaged barcode labels can still be read very easily. It is hypothetically possible to create a barcode of any length but, in practice, most barcode readers can only read quite short barcodes. Consequently barcodes are used where the information to be transferred is very simple. For example, most of the barcodes used on things that are bought in shops contain only eight, twelve or thirteen digits.
Bar codes are used so that businesses can track their inventory. Once bar coded, businesses can track products in their warehouse.
To help stores take note on how much stock they have got.
Bar codes are used by stores and supermarkets. Every product in the store would have a bar code, which would be scanned at the till or register to quickly access a database - …which stores and retrieves the following data; 1. The Product Name 2. The Type of Product 3. The Price (not actually stored on the bar code, as this is always changing, but can be altered on the database). Once scanned, the information will be added to the customers receipt. Some stores may also keep records of the bar codes scanned, so they can see what products sell well, and other details like that. Barcodes are also used in industry. Steelmaking plants that make sheet steel first mill steel slabs out into a few kilometres of sheet - this is wound up into a 40-tonne coil for ease of handling. Each coil gets a barcode which can easily be read when coils are pulled from the warehouse for processing. You'll also find barcodes on all kinds of electronic/computer equipment and (sometimes) on their individual components/subassemblies. Barcodes give rapid and accurate identification of any coded item.
Many places, but very often in stores and warehouses that have a large number of different products to keep track of, like a grocery or department store. The motivat…ion is to save time and money, it is quicker and less error prone to scan in a bar code than to type in the name of a product, or even to select one type of cereal from a list of a dozen others. See related Wikipedia link for a more extensive list, including airplane boarding cards, postal mail and art.
basically in any store I guess
Any where a large number of items need to be moved in a small amount of time. Examples are fans going into a sports event, warehouse stock coming into or out of the warehouse,… sales registers in fast paced retail outlets.
To make stock-control easier. Every item has its own unique bar-code - each time the item is scanned at the till, the computer system updates the stock list. The manager can t…hen see at a glance which items need re-ordering.
Keep black people in Jails around New York area
NASA uses bar codes to monitor the millions of parts they get to build space vehicles. For example NASA had to purchase thousands of heat tiles for the bottom of the space shu…ttle, for the reentry part of the mission. They were able to track them from start to finish.
I actually worked at a retail store for many years. When we implemented our bar code readers it was to read UPC codes of products. Our computer system would recognize the UPC …and be able to then give the price we had assigned to the product. Each product has a unique UPC.
just use it like a regular one or barcode
Actually they were used when i don't exactly know but first used to get things organized
They are used to classify which items you are buying and how much they cost. This is a quick and easy way for you to check out with different items and the store can inventory… the items that were sold.
UPC, Universal Product codes, are found on almost every product consumers buy. UPC codes are used to keep track of inventory and speed up the checkout process.