摘要:
The invention concerns a method, authentication data handling device and computer program product for investigating a product. The authentication data handling device includes a database comprising product identifiers of authentic products, and a control unit. The control unit receives, from a user, a code of a product which is to be investigated, compares the code with a product identifier stored in a database, indicates the authenticity of the product if the codes match, requests a contacting identifier from the user and in case a contacting identifier is received from the user, stores this contacting identifier associated with the product identifier in the database in order to allow product information to be transmitted to the user.