What exactly is a barcode and what does it do?

A bar code is a small graphic of lines (bars) and spaces used to identify a certain product number, person, or place on retail store items, identification cards, and postal mail (commonly perceived as a single word, barcode). To represent numerals and other symbols, the code employs a series of vertical bars and spaces.

A barcode is a graphic made up of parallel black and white bars that a scanner can read Barcodes are used to label products so that they may be quickly identified. In retail businesses, EAN barcode India are widely used to aid in the purchasing process, in warehouses to track and manage inventory, and on invoices to aid in accounting.



Within the numeric-only barcode category, there are about a dozen different symbologies. The UPC code, which can be found on many retail items and contain information such as the manufacturer and product identity, is the most prevalent. At the point of sale, EAN codes are commonly utilized.


The remaining symbologies in this category are all derived from Code 39, which was the first alpha-numeric code designed for use in industries other than retail. In the defence and automotive industries, LOGMARS, Code 93, and Code 128 are all used.

Purpose of barcodes

  • When buying something from a store, you’ll notice a label with thin black lines running across it, as well as a variety of different numbers on the packaging.
  • When a cashier scans this label, the item’s description and price appear on the cashier’s computer screen automatically. The symbology of this barcode, which comprises the widths of those small black lines, is utilized to read data and information.
  • Although most of us think of barcodes as a way to price things at the grocery or department store, they have a wide range of applications. In almost every aspect of consumer life, barcodes are becoming more and more common to know more visit here.

Varieties of barcodes

Numeric, alpha-numeric, and two-dimensional barcodes are the three basic forms of barcodes. The first two varieties are one-dimensional, consisting of either numbers or a combination of letters and numbers, as well as bars of various widths.

UPC barcode

  • In 1973, the UPC code became the first widely used product barcode. The most common version of UPC, UPC-A, is a 13-digit code with 10 digits for the individual product, an 11-digit check code, and two extra digits for cataloguing items within a system, which are rarely used and almost never printed in human-readable form.
  • (In this case, “human-readable” refers to the numbers printed surrounding or below the barcode, as opposed to the machine-readable numbers represented by the bars.)

EAN barcode

  • The “European version” of the barcode, designed in 1976, is known as EAN. The EAN, like the UPC-A, is a 13-digit code, but the printed version displays all 13 numbers in a human-readable format, giving the impression that it has more digits.
  • Ten digits are used for product identification, one as a check number and two as a nation code that identifies the country where the goods was stamped for retail.

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