(1) high accuracy: By scanning the bar code input data, its accuracy is much higher than the keyboard input. The keyboard's input error rate is one in three thousandths, while the bar code input error rate is one in three millionths.

(2) input speed: bar code input speed is 20 times of keyboard input speed.

(3) easy to make: easy to make barcode, no special requirements on printing technology, equipment and materials.

(4) economical and practical equipment: reliability, easy to operate, cost-effective.
 
Based on the above bar code advantages, making all the information exchange, physical distribution, greatly increased delivery, many shopping malls, supermarkets, warehousing management have installed bar code system. The application of bar code, especially for the logistics warehouse, express delivery industry's rapid development, provided the prerequisite. A typical logistics bar code management system should include the automation of transportation, storage, delivery, receiving and other business management. As the only identification point that runs through the entire logistics process, bar codes play an important role as links in all aspects.
 
The first is the purchase of goods: the operator uses the bar code data acquisition device to identify the original bar code identification of goods, enter the customer code, quantity, shelf and other information, and then placed the goods on a small transporter (such as items without bar code, bar code data Collector will default to empty). After all items in the warehouse have been logged in, put the data collector on the communication interface and drive the printer to print the product identification and list of the jumbo.
 
Followed by the delivery of goods: The operator first bar code data acquisition device to scan the identity of the goods, enter the customer code, the number of goods, train trips and other information, the operation is completed, the printer prints the goods out of the warehouse list, and then pass the data Network database to update the data processing. Complete the automatic delivery of goods.
 
Finally, the management of the items, inquiries: bar code system in storage management applications, as if tailor-made in general, very easy to solve the problems of the traditional warehouse management, making the entire management methodical and clear. Use barcodes to manage items individually. Each of the different specifications and types of goods with different bar code logo, integrated bar code data acquisition, computers and other auxiliary identification, entry equipment, the implementation of a code. All items according to the code for classification, identification. Query, inventory of goods, simply scan the article with a bar code scanner encoding, the database server will submit all the details of eligible items submitted. You can also scan the barcode of the warehouse receipt or the warehouse receipt, check the consignee of the goods and other relevant information, and at the same time can understand the operation of the entire company. You can even rely on the advanced network to query and track the dynamic items. All work can be handed over to the bar code to manage.