Importance

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Abstract

A system for increasing the value of an electronic payment card. The system comprises, e.g., a security module arranged for authentication of the card, and an authorizing device for authorizing a value increase transaction to the card. The system is arranged for sending a value increase message to the card, upon which the value stored in memory in the card is increased, if the card has been found to be authentic and the value increase transaction thereof has been authorized. The system also has memory, in which identification data of the card is stored and, linked thereto, data relating to the authorization of the value increase of the card. If a value increase transaction is interrupted after authorization for the transaction had been given, a restore transaction occurs. In the restore transaction, the authenticity of the card is checked and the value increase transaction occurs on the basis of the authorization information previously stored in the system memory during the value increase transaction. Hence, through the system, interrupted value increase transactions may be recovered without the need for a new authorization.

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First Claim