It is recommended to go to a professional department to identify the authenticity of Jian Nanchun. It is impossible to identify it just by looking at the bar code.
In 1950s, bar code technology appeared, however, Wrigley gum appeared in Ohio 1974. Previously, although IBM planned to buy a barcode patent, the price given was not satisfactory. 1962, gefei company of America finally bought the bar code patent and sold it to American radio company in a short time. In 1970s, with the development of LED, microprocessor and laser diode, the price of barcode scanner and decoder dropped sharply. When the first system entered the market, the whole set of equipment including printing and reading equipment was only about $5,000. Due to the bar code technology, the efficiency of customers' obtaining commodity information is greatly improved. By the 1980s, bar code technology had been popularized in the United States.