Charge card and debit transactions using a variable charge...

Details Charge card and debit transactions using a variable charge... Charge card and debit transactions using a variable charge...

2006-09-05

2006-09-05

Stcyr, Daniel (Department: 2876)

Registers

Systems controlled by data bearing records

Credit or identification card systems

C235S379000, C705S039000, C705S040000

Reexamination Certificate

active

07100821

ABSTRACT:
A system and method to improve on the security of credit cards when money needs to be charged or transferred by assigning a different charge number to every transaction. A charge number is a combination of the card number and a random number that is generated through a user initiated preauthorization phase. A temporary preauthorization number is issued for a maximum amount to be charged to a specific merchant. Preauthorization output is passed on to the merchant for verification and deposit purposes. A specially designed cellular phone or PDA can be used in lieu of a charge card, in which case the generated preauthorization number can either be stored in a removable memory, or be directly sent to the merchant's charge machine. The card/charge-device does not contain all of the information required for a successful transaction, therefore security is maintained despite its loss or theft of numbers.

REFERENCES:
patent: 5267314 (1993-11-01), Stambler
patent: 5956699 (1999-09-01), Wong et al.
patent: 6000832 (1999-12-01), Franklin et al.
patent: 6339766 (2002-01-01), Gephart
patent: 6636833 (2003-10-01), Flitcroft et al.
patent: 6805288 (2004-10-01), Routhenstein et al.

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