What is a bar code? How to apply?

First, I believe many people are vague about the concept of commodity bar code. Most people just stay in the supermarket when they check out. The cashier picks up the bar code gun and sweeps it at the goods. The name and price of the goods will appear on the cashier computer. In fact, with a little attention, we can find that almost all the items used in our lives have such barcodes, but few people know what this means. Commodity bar codes have become "familiar strangers" in many people's lives. What is the mystery of this commodity barcode? Bar code application: 2 copies of business license; Please indicate on the copy of the business license: "This copy is consistent with the original".

Second, the bar code we often talk about is actually a kind of commodity bar code, which is composed of a group of bars, spaces and their corresponding codes arranged regularly, and represents the bar code symbol of commodity code, which is mainly used for code and bar code identification of retail commodities, warehousing and packaging commodities, logistics units, participants' positions, etc.

Generally speaking, commodity bar code is equivalent to product ID card, which can ensure that the code of each commodity item of each enterprise is unique and universal in the world.

4. In the Measures for the Administration of Commodity Barcodes, various terms are explained in detail: retail commodity codes and barcodes refer to the codes and barcode labels compiled for commodity units with the main purpose of satisfying retail scanning and settlement. Non-retail commodity codes and barcodes refer to the codes and barcodes of commodity units for the purpose of satisfying non-retail settlement.