| 摘要 |
A method, a device, a computer program product and a product package for issuing and redeeming gift certificates on an e-commerce site. The method comprises receiving an order for a gift certificate from a first user. The order comprises at least a credit amount and information for identifying a second user who is to be permitted to utilize the credit amount. The second user is provided with an information carrier which is provided with a position-coding pattern which codes coordinates for a plurality of points on an imaginary surface. The points represent at least one product offered by the e-commerce site. Coordinates for at least one point and information that identifies the second user are received from the second user, via a computer network. This information is used to identify the credit amount that the user is permitted to utilize. Thereafter, an amount corresponding to the price of the product corresponding to the received coordinates is deducted from the credit amount.
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