Patent ID: 6112985
Filing Date: 2000-09-05
Classification: G06K,G06Q,G07F

Abstract:
A chip card system comprising:a user chip card, the user chip card including a processor and a non-volatile memory, the non-volatile memory storing an operating system of the processor;a license chip card, the license chip card including a processor and a non-volatile memory, the non-volatile memory storing a number indicative of the number of user chip cards that can be activated; anda read-write station,wherein:in order to activate the user chip card, the processor of the user chip card generates a random number which is transmitted by means of the read-write station to the license chip card,if the number stored in the non-volatile memory of the license chip card indicates that the number of activatable user chip cards is not yet exhausted, the processor of the user chip card generates an enabling identification as a function of the random number, and the enabling identification is transmitted via the read-write station to the user chip card,the enabling identification is checked by the processor of the user chip card for correspondence with the random number and if there is correspondence, a set of permissible user command instructions is activated, andthe number stored in the non-volatile memory of the license chip card indicative of the number of activatable user chip cards is decremented.