We want to buy only genuine and quality products. A barcode is a kind of product authenticity code that can be easily decrypted.
Instruction manual
1
Most often, there are two types of barcodes: European 13-digit and American 12-digit. They are fully compatible with each other. Let us dwell on the first of them in more detail. In such a barcode, the first three digits are the country code, the next four are the manufacturer's code, the next 5 are the product code (they name the product, its consumer properties, dimensions, weight and color) and, finally, the last digit is called the control. It is used to verify the correctness of the code.
2
The barcode alone cannot guarantee the quality of the product, but at the same time it is a marker of authenticity, since any product registered officially has its own unique number.
There is one interesting method for checking the barcode, as they say, in the field.
Suppose we have some kind of barcode. We take (counting from left to right) and add up the numbers in even places. The resulting amount must be multiplied by 3. Next, add up all the numbers that are in odd places (we do not take the control digit). It turned out two amounts. Add them up. In the resulting number, we discard the discharge of tens and subtract 10 from what remains after this discard. If the result is a check digit, then the barcode is genuine.
3
Short list of main country codes:
000-139 US
300-379 France
400-440 Germany
450-459 490-499 Japan
460-469 Russia
47909 Sri Lanka
481 Belarus
482 Ukraine
500-509 United Kingdom
520 Greece
540-549 Belgium, Luxembourg
560 Portugal
640-649 Finland
690-695 China
700-709 Norway
729 Israel
730-739 Sweden
750 Mexico
754-755 Canada
760-769 Switzerland
779 Argentine
789-790 Brazil
800-839 Italy
840-849 Spain
850 cuba
870-879 Netherlands
890 India
There are online services where you can enter the barcode you are interested in and check the authenticity of the purchased goods, a link to one of them is given below.
