Patent ID: 6435405
Filing Date: 2002-08-20
Classification: G06K,G07F

Abstract:
A method for identifying and handling critical card commands of a chip card application, comprising the steps of:a) transmitting a card command to be executed to a comparison device prior to its execution; b) comparing the card command to be executed to defined comparison samples to identify critical card commands, said critical card commands comprising commands for at least one of monetary instructions and digital signature; c) executing the card command if the card command to be executed is not identified as a critical card command by said comparing; d) delaying of the card command to be executed if it corresponds to a comparison sample in the comparison device; and e) executing the card command to be executed which is identified as a critical card command by said comparing only if a pre-defined event occurs, said predefined event comprising execution of at least one user-defined user confirmation condition.