Barcode technology since its birth, has become one of the most important information management in modern society by virtue of its in the collection of information on the flexible and efficient,reliable, and low cost. The most common and barcode equipment as the front-end equipment information collection, is the prerequisite and basis for the application of barcode technology, and with the continuous development of bar code technology, has become the retail, logistics and warehousing, product traceability, industrial manufacturing, medical health infrastructure essential information system construction of electronic commerce and transportation systems and so on.