bar code
Barcodes are like the ID numbers of goods. The bar code information of the goods is scanned, which only shows that the goods do exist and have recorded information, but it cannot be guaranteed that the goods must be genuine. In addition, most of the information in the database of the most widely circulated and frequently used barcode scanning software is collected by software vendors and provided by users.
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The serial number can be understood as the ID number of the product, but it is not an ID card. And it is very simple to generate a number exactly like the genuine one. Therefore, it is impossible to distinguish the true from the false only by the serial number on the product packaging. It records some information of the product, which is called standard code in the industry. It consists of 13 digits assigned by ean international, 3 country codes, 4 manufacturer codes, 5 commodity codes and 1 inspection codes.
Extended data:
Bar code technology is an automatic identification technology developed in computer application, which is widely used in business, postal service, book management, warehousing, industrial production process control, transportation, packaging, distribution and other fields. It first appeared in the 1940s, and it is "composed of a set of regularly arranged bars, spaces and their corresponding characters, which are used to express certain information".
References:
Baidu Encyclopedia _ Barcode
China Net _ Don't trust barcode scanning software to judge the authenticity of goods.