Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued by a financial institution. The payment card comprises an original payment card number. A first plurality of digits of the original payment card number is provided to a processor. The first plurality of digits are predetermined digits associated to the financial institution. A desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction is provided to the processor. A program is executed by the processor to set a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generate a first number corresponding to the desired expiration date, set a second plurality of digits in the time-limited number to the first number, and output the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued to a user by a financial institution. The payment card comprises an original payment card number. The method comprises the steps of providing to a processor a first plurality of digits of the original payment card number, where the first plurality of digits are predetermined digits associated to the financial institution, providing to the processor a desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction, and executing a program by the processor so that the program sets a first plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generates a first number corresponding to the desired expiration date, sets a second plurality of digits in the time-limited number to the first number, and outputs the time-limited number.

Abstract: A computerized method for generating a time-limited number for use in a payment card transaction involving a payment card issued to a user by a financial institution. The payment card comprises an original payment card number. The method comprises the steps of providing to a processor a first plurality of digits of the original payment card number, where the first plurality of digits are predetermined digits associated to the financial institution, providing to the processor a desired expiration date through which the time-limited number is valid for acceptance in the payment card transaction, and executing a program by the processor so that the program sets a first. plurality of digits in the time-limited number to the first plurality of digits in the original payment card number, generates a first number corresponding to the desired expiration date, sets a second plurality of digits in the time-limited number to the first number, and outputs the time-limited number.

Abstract: A software-based computer method for limiting the lifetime of an electronic credit card transaction that makes the transmitted credit card information useless when a configurable time limit expires. The method is designed to provide protection for electronic transactions that require use of an identifying key such as a credit card number, with or without an additional unique identifier comprising a sequence of alphanumeric values, such as a PIN, for the purpose of initiating a transaction. The method provides protection by the addition of a transaction-initiated date/time stamp which is included as part of the transmitted transaction information and provides the basis for limiting the amount of time the transaction is valid.