The anti-counterfeiting feature, scanify Print ID, can be easily and cost- effectively integrated into existing processes and printed on various materials - for example, on folding cartons, blister packs, product or textile labels. In the patented process, the security feature, which is invisible to the human eye, is recognized and verified using complex image processing algorithms. In addition, invisible data such as serial numbers or product data of several bytes can also be hidden in this way. Detection and authentication take place on the device in real time - without the need for a connection to the internet.