Abstract: A method for selectively blocking a remote purchase request based on previous remote purchase requests. The method starts with receiving and storing, in a memory subsystem, information from purchase request information sets including, for each purchase request information set, an origin, a card number and an item. Also, a current remote purchase request information set including an origin, a credit card number and an item is received and stored. The current remote purchase request information set is compared with the stored information sets and the current remote purchase request is blocked if the comparison meets any one of a predetermined set of criteria wherein at least one criterion includes a condition that the purchase request origin of the current purchase request match a purchase request origin of a purchase request information set stored in the memory subsystem, for which the card number is different.

Abstract: A system for selectively blocking a current remote purchase request based on information gained from at least a previous remote purchase request. The device includes a first data input subsystem capable of receiving purchase request information set including a credit card number, merchandise descriptions and origin. A memory subsystem receives the information set from the previous and current remote purchase requests. A logic subsystem compares the purchase request record of the current remote purchase request with the purchase request record of the previous remote purchase request and automatically blocks the current remote purchase request if the comparison meets any one of a predetermined set of criteria. At least one criterion includes a condition that the current purchase request origin match the previous purchase request origin.