Method and arrangement for retrieving information related to a product

An arrangement for enabling an acting party, e.g. a natural person or an automatic inspection line, to retrieve information from a product (150), e.g. for genuineness verification, comprises an optical device (102) for optically receiving auxiliary information from the product, a processing system (103) for retrieving instruction data from a database (104) on the basis of the auxiliary information, and a data interface (105) for delivering the instruction data to the acting party for enabling the acting party to retrieve the information. In the genuineness verification application, the verification is provided with two separate components. A first component resides in the auxiliary information on the surface of the product and a second component resides in the instruction data. The division of the genuineness verification into the two components makes it more difficult for a counterfeit manufacturer to analyze the counterfeit protection and to follow changes in the counterfeit protection.