1
Vincent Boston, Elvis W Boggan, Einar L Asbo: Transaction system with off-line risk assessment. Visa International Service Association, Limbach Limbach & Sutton, March 14, 1989: US04812628 (410 worldwide citation)

The subject invention relates to a transaction system wherein the issuer of transaction cards can regulate the type of authorization requests transmitted from the point of transaction. The system includes a plurality of transaction cards, each of which are provided with risk assessment data associat ...


2
Elvis W Boggan: Transaction approval system. Visa International Service Association, Limbach Limbach & Sutton, July 24, 1990: US04943707 (166 worldwide citation)

An improved system is disclosed for detecting invalid transaction cards at remote transaction terminals. The system includes providing each terminal with a master table having data corresponding to invalid cards. The data in the master table is less than the actual account numbers of the invalid car ...


3
Vincent Boston, Elvis W Boggan, Einar L Asbo: Transaction system with off-line risk assessment. Visa International Service Association, Limbach Limbach & Sutton, March 29, 1988: US04734564 (149 worldwide citation)

The subject invention relates to a transaction system wherein the issuer of transaction cards can regulate the type of authorization requests transmitted from the point of transaction. The system includes a plurality of transaction cards, each of which are provided with risk assessment data associat ...


4
Elvis W Boggan, Carl M Campbell: Transaction approval system. Visa International Service Association, Limbach Limbach & Sutton, March 13, 1990: US04908521 (132 worldwide citation)

An improved system is disclosed for detecting invalid transaction cards at remote transaction terminals. The system includes providing each terminal with a master table having data corresponding to invalid cards. The data in the master table is less than the actual account numbers of the invalid car ...


5
Elvis W Boggan, Carl M Campbell Jr: Transaction approval system. Visa International Service Association, Limbach Limbach & Sutton, April 18, 1989: US04822985 (125 worldwide citation)

An improved system is disclosed for detecting invalid transaction cards at remote transaction terminals. The system includes providing each terminal with a master table having data corresponding to invalid cards. The data in the master table is less than the actual account numbers of the invalid car ...


6
Elvis W Boggan, Carl M Campbell: Transaction approval system. Visa International Service Association, Limbach Limbach & Sutton, September 26, 1989: US04870259 (123 worldwide citation)

An improved system is disclosed for detecting invalid transaction cards at remote transaction terminals. The system includes providing each terminal with a master table having data corresponding to invalid cards. The data in the master table is less than the actual account numbers of the invalid car ...



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