On August 1, the national customs promotes the function of "single window" commodity bar code declaration, and the scope of application will gradually expand to all commodity categories. This means that the enterprise declaration ushered in the era of "code reading", and the unification of customs declaration will greatly speed up customs clearance.

Bar code is the only global identification of commodities in the whole process of production, sale, transportation, warehousing, settlement and so on. It is also the "identity card" and "pass" of commodities. Bar code declaration means that customs can automatically identify commodities by building barcode information database to cover multi-dimensional commodity information such as raw material composition, brand, specification, type, origin and use. When enterprises import and export commodities with barcode information, they only need to declare barcode in the "single window" system to realize the automatic identification of commodities. Automatic collection of declared elements such as classification, origin and specifications. This kind of "voucher declaration" realizes "second input" with intelligent assistance, which not only improves the efficiency of customs personnel, but also provides a more convenient declaration method for enterprises, and also becomes an important guarantee for commodity quality supervision.

With the rapid development of Internet technology, it is not only customs commodities that have entered the "code reading era", but also practical applications in many fields. For example, the way of scanned agricultural products can make the information of agricultural products from the field to supermarket clear, even the information of farmers; scanned wallpaper and wallpaper can be queried, retrieved, traced back to all the performance and quality, production and other data information corresponding to the product one by one; scanned vaccine, Key information including vaccine name, manufacturer, batch number, expiration date will be displayed, so that the problematic vaccine can not be sheltered... These are all code-sweeping applications that have been implemented at present. Through code-sweeping, product information can be disclosed, which can play a retrospective role in the production and sale of food, commodities, drugs, etc. and make consumers more confident and supervision more transparent. Expect more and more scanner applications, so that technology can better serve people's better life.