Charge card and debit transactions using a variable charge number
First Claim
1. A method for completing a charge transaction on a charge account comprising the steps of:
- a) providing a user with a charge account;
b) providing a user with a partial charge account number corresponding to the charge account which cannot by itself be used for a charge transaction;
c) enabling a user to obtain a personal identification number (PIN) corresponding to the charge account;
d) receiving an account request includingi. said partial charge account numberii. said PIN number of user associated with said accountiii. a maximum amount to be chargediv. a merchant number or vendor identification codee) if said account request is valid and there are sufficient funds, sending in response a temporary preauthorized string of digits which together with the partial charge account number form a complete charge number which can be used for a charge transaction only in association with said merchant number/vendor identification code or otherwise sending in response a rejection communication.
2 Assignments
0 Petitions
Accused Products
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.
410 Citations
15 Claims
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1. A method for completing a charge transaction on a charge account comprising the steps of:
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a) providing a user with a charge account; b) providing a user with a partial charge account number corresponding to the charge account which cannot by itself be used for a charge transaction; c) enabling a user to obtain a personal identification number (PIN) corresponding to the charge account; d) receiving an account request including i. said partial charge account number ii. said PIN number of user associated with said account iii. a maximum amount to be charged iv. a merchant number or vendor identification code e) if said account request is valid and there are sufficient funds, sending in response a temporary preauthorized string of digits which together with the partial charge account number form a complete charge number which can be used for a charge transaction only in association with said merchant number/vendor identification code or otherwise sending in response a rejection communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system which enables the completion of a charge transaction on a charge account said system having means to
a) provide a user with a charge account; -
b) provide a user with a partial charge account number corresponding to the charge account which cannot by itself be used for a charge transaction; c) enable a user to obtain a personal identification number (PIN) corresponding to the charge account; d) receive an account request including i. said partial charge account number ii. said PIN number of user associated with said account iii. a maximum amount to be charged iv. a merchant number or vendor identification code e) if said account request is valid and there are sufficient funds, send in response a temporary preauthorized string of digits which together with the partial charge account number form a complete charge number which can be used for a charge transaction only in association with said merchant number/vendor identification code or otherwise send in response a rejection communication. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification