Example embodiments relate to a method for granting customers access to a product or a set of products. The method may include providing by the customer through a secured communication network, a code to a registration center, wherein the code being unique, transmitting the code from the registration center to an authorization center, retrieving the identifier of the product or the set products from the code, by requesting a data base or calculating the identifier, and transmitting, by the authorization center, an authorization code to the customer terminal, wherein the authorization code allows access to the product or the set of products.