The meaning of 13 in the bar code diagram means that the first three digits indicate the origin (country) of the goods. The last four digits indicate the manufacturer's commodity name, which is uniformly assigned to the applied commodity name by the coding organization of the country (or region). The next five numbers are the number of each product. Manufacturers classify products first, and then code them one by one.
Fake cigarettes also have identification codes, but the courage code itself is used for classification. It is not possible to look at the bar code, because the fake bar code is the same when scanned.
The identification of fake cigarettes can be carried out from the aspects of packaging, smell, feel and quality of cut tobacco, but it requires experience.