1
Joseph P Francini, Einar L Asbo, Vincent Boston: Transaction card with magnetic stripe emulator. Visa International Service Association, Limbach Limbach & Sutton, October 20, 1987: US04701601 (513 worldwide citation)

A transaction card is disclosed having a magnetic stripe emulator. The transaction card is adapted for use with presently available transaction terminals that include a sensor for reading a magnetic stripe. The subject card includes a transducer for generating a varying magnetic field corresponding ...


2
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 (420 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 ...


3
Vincent Boston: Portable financial transaction card capable of authorizing a transaction in foreign currencies. VISA International Service Association, Limbach Limbach & Sutton, August 23, 1988: US04766293 (333 worldwide citation)

A transaction card is disclosed capable of authorizing a transaction in a foreign currency. The subject transaction card includes an internal microprocessor which is connected to a memory. Stored within the memory is a transaction limit associated with each account of the cardholder. Also stored in ...


4
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 (152 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 ...