1. Retail industry. 

The retail industry is the most mature field of bar code application. EAN commodity bar codes have laid the foundation for the retail industry to apply bar codes for sales. At present, most of the products sold in supermarkets use EAN barcodes. When selling, scan the EAN barcodes with a scanner, and the POS system will find the corresponding name, price and other information from the database, and count the products purchased by customers. 

2. Library. 

Barcodes are also widely used in the circulation of books in libraries. Barcodes are affixed to books and library cards. When borrowing books, you only need to scan the barcode on the library card, and then scan the barcode on the borrowed books. , the relevant information is automatically recorded in the database.

3. Warehouse management and logistics tracking. 

For the flow of bulk items, the application of barcode technology can realize fast and accurate recording of each item, and various data collected can be processed by the computer system in real time. It enables various statistical data to accurately and timely reflect the status of the item.

4. Quality tracking management. 

The ISO9000 quality assurance system emphasizes the traceability of quality management, that is to say, for products with quality problems, its production time, operator and other information should be traceable.

5. Automatic data entry (2D barcode). 

The problem of entering a large number of formatted documents is a very cumbersome matter, not to mention wasting a lot of manpower, and the accuracy rate is difficult to guarantee. With 2D barcode technology, thousands of letters or Chinese characters can be put into a 2D barcode the size of a business card, and these contents can be input correctly within a few seconds with a dedicated scanner.