Method for cancelling a transaction of an electronic payment means, as well as payment means for application of the method

摘要

A method and system for cancelling payments effected with an electronic payment device (11), such a smart card or IC card, in an off-line payment system including transmitting a check value, such as a random number, from a protected storage module of a terminal (12) to the payment device (11) and subsequently checking the check value in the payment device (11). After performing a positive check, a last transaction in a memory of the payment device (11) is cancelled, for example, by decrementing a pointer.