What is a marking code? What data is contained within?

The marking code contains unique information about every product item. It is represented as a GS1 DataMatrix 2D barcode and consists of the following data blocks:

  • GTIN (Global Trade Item Number): 14 numerical characters generated by GS1
  • Individual trade item serial number: 13 characters (20 characters for photography accessories) generated by the Belarusian operator (SIS “Electronic Mark”)
  • “Crypto-tail”: digital signature (4-digit verification key + 44-digit verification code (88 digits for footwear)) generated by the operator (SIS “Electronic Mark”)

To generate a GS1 DataMatrix code, product groups are separated with dedicated reserved delimiting characters (GS1 application identifiers).