A compliant data matrix code can be generated by the web application BetterID which can be assessed from any computer. To do so, the operator only enters the GTIN of the product (Batch and Expiry Date are optional) on the BetterID web interface. BetterID now ensures a safe generation of Serial Numbers and passes them on to the system provider (CRPT). Upon receiving the GTIN and Serial Number, the system provider generates the verification part of the code. The Verification Key and the E-Signature will be transmitted back to the BetterID module and the operator receives the compliant data matrix code. The printing of labels can then be initiated on the BetterID web interface and the operator also receives a download file with the generated codes. Alternatively, the file can be passed on to a printing company who prints these data matrix codes on the folding boxes.