| 摘要 |
A method in trade, wherein a customer (A) effects a purchase for acquiring a product, a service, a game voucher and/or the like from a service provider (PT), such as a seller (M), a server (P) and/or the like, in which process the customer chooses, confirms and/or pays for their purchase, whereby the service provider (PT), if necessary after the verification of personal data, credit information and/or the like, confirms that the purchase transaction has been properly conducted and transmits to the customer at least a receipt or the like in an electronic mode substantiating the legitimacy of a purchase transaction and for storing the same in an electronic memory (C) possessed by the customer (A). Following an accepted purchase transaction, the customer (A) is supplied with a so-called smart certificate of purchase (X), which contains an independent information package, such as a file or the like, by means of which a purchase transaction between the customer (A) and the service provider (PT) is immediately identifiable and venfiable in procedures regarding an acquired product, service or the like, such as a transfer of the same to another customer, a resale, a redemption or the like exploitation. |
