Importance

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Abstract

A credit card status verification system is disclosed in which the status of very large numbers of credit cards is contained and accessed from a compact storage media, such as a CD-ROM disk, at a remote location, thereby eliminating the necessity of obtaining the status information from a centrally located facility via a communication link. A data mapping algorithm is employed to map credit card numbers to status containing locations within memory without requiring large amounts of memory space for addressing. A multiple level screening process is employed for checking the validity of a credit card number and the credit status of a credit card which is both quick and economical.

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First Claim