The use of ID-1 cards is in an extremely large increase nowadays starting from identity cards, bank cards, driving licenses, membership cards, etc. In some of the uses, the security of the card and the data that the card holds are very important. Some of the security elements are defined in the production of the card and some during the personalization of the data on the card. Laser card engraving is a high-security feature that is applied during the process of personalizing the data on the card. In this article, we will present h ow to implement the digital signature in the data personalization using laser engraving and QR barcodes to minimize the costs of cards and to ensure the data on cards are not modified.