SECURITY CHECK METHOD, CARD CUSTOMER MANAGEMENT DEVICE, CARD WITH RADIO TRANSMISSION FUNCTION AND MOBILE OBJECT EXCHANGE

摘要

PROBLEM TO BE SOLVED: To prevent the unauthorized use of a card for commercial transactions by a third party. SOLUTION: This card customer management device 131 retrieves the telephone number of a mobile object radio terminal 128 owned by the card contractor of the card at the point of time when the card is to be utilized, calls the mobile object exchange 120 housing the mobile object radio terminal 128 by using the retrieved telephone number, requests the calling of the mobile object radio terminal 128 and also requests to inform the mobile object radio terminal 128 of the fact that the card is to be utilized. In the case that a call is terminated from the card customer management device 131, the calling of the mobile object radio terminal 128 is requested and it is requested to inform the mobile object radio terminal 128 of the fact that the card is to be utilized, the mobile object exchange 120 calls the mobile object radio terminal 128 and transmits a message for indicating that the card is to be utilized.