Payment vehicle with on and off function

1. A method of enabling or disabling, in response to electronic text messaging by a computing device, a payment vehicle such that the payment vehicle is usable or unusable for electronic payment transactions, the method comprising:

receiving, by a computing system comprising a transaction engine, a first transaction authorization request for a first electronic payment transaction involving the payment vehicle;

determining, by the computing system, whether to authorize or decline the first transaction authorization request based on whether logic of a computer-based payment network indicates the payment vehicle is enabled or disabled;

processing, by the transaction engine of the computing system, via the computer-based payment network, the first electronic payment transaction responsive to determining to authorize the first transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is enabled, wherein processing the first electronic payment transaction comprises connecting the computer-based payment network to a source of funds corresponding to the payment vehicle;

receiving, by the computing system, an electronic text message generated in response to a user input into a computer device and transmitted by the computer device, the electronic text message containing a command to disable the payment vehicle for subsequent use in making electronic payments;

updating, by the transaction engine of the computing system, the logic of the computer-based payment network to indicate the payment vehicle has been disabled to thereby prevent subsequent electronic payment transactions with the payment vehicle, the updated logic establishing additional security for the payment vehicle by automatically declining subsequent transactions involving the payment vehicle;

receiving, by the computing system, a second transaction authorization request for a second electronic payment transaction involving the payment vehicle;

determining, by the computing system, whether to authorize or decline the second transaction authorization request based on whether the logic of the computer-based payment network indicates the payment vehicle is enabled or disabled;

declining, by the computing system, the second electronic payment transaction responsive to determining to decline the second transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is disabled;

receiving, by the computing system from the computer device, a second electronic text message comprising a second command to enable the payment vehicle for subsequent use in making electronic payments; and

updating, by the transaction engine of the computing system, the logic of the computer-based payment network to indicate the payment vehicle has been enabled for subsequent electronic payment transactions.

2. The method of claim 1 , further comprising transmitting, by the computing system and after updating the logic to indicate the payment vehicle has been disabled, an electronic confirmation message to the computer device to indicate the payment vehicle is disabled.

3. The method of claim 1 , further comprising:

receiving, by the computing system, a third transaction authorization request for a third electronic payment transaction involving the payment vehicle;

determining, by the computing system, whether to authorize or decline the third transaction authorization request based on whether the logic of the computer-based payment network indicates the payment vehicle is enabled or disabled; and

processing, by the computing system, the third electronic payment transaction responsive to determining to authorize the third transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is enabled.

4. The method of claim 1 , further comprising transmitting, by the computing system and after updating the logic of the computer-based payment network to indicate the payment vehicle has been enabled, an electronic confirmation message to the computer device to indicate the payment vehicle is enabled.

5. The method of claim 1 , wherein the first transaction authorization request is received from a merchant point-of-sale (POS) terminal, and wherein authorizing the first electronic payment transaction comprises transmitting, by the computing system, an electronic approval to the merchant POS terminal.

6. The method of claim 1 , wherein the user input includes a text string indicating the payment vehicle is to be disabled.

7. The method of claim 1 , wherein the computing system is a financial institution computing system associated with an issuer of the payment vehicle.

8. The method of claim 1 , wherein the computing system is part of a computer-based electronic payment network through which electronic payment transactions involving the payment vehicle are processed.

9. The method of claim 1 , further comprising electronically receiving, by the computing system, prior to receiving the electronic text message, a request from the computer device to enroll in a card enabling and disabling program.

10. A computing system comprising a transaction engine, the computing system configured to enable or disable, in response to electronic text messaging by a computer device, a payment vehicle such that the payment vehicle is usable or unusable for electronic payment transactions, by:

receiving a first transaction authorization request for a first electronic payment transaction involving the payment vehicle;

determining whether to authorize or decline the first transaction authorization request based on whether logic of a computer-based payment network indicates the payment vehicle is enabled or disabled;

processing, by the transaction engine, via the computer-based payment network, the first electronic payment transaction responsive to determining to authorize the first transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is enabled, wherein processing the first electronic payment transaction comprises connecting the computer-based payment network to a source of funds corresponding to the payment vehicle;

receiving an electronic text message generated in response to a user input into the computer device and transmitted by the computer device, the electronic text message containing a command to disable the payment vehicle for subsequent use in making electronic payments;

updating, by the transaction engine of the computing system, the logic of the computer-based payment network to indicate the payment vehicle has been disabled to thereby prevent subsequent electronic payment transactions with the payment vehicle, the updated logic establishing additional security for the payment vehicle by automatically declining subsequent transactions involving the payment vehicle;

receiving a second transaction authorization request for a second electronic payment transaction involving the payment vehicle;

determining whether to authorize or decline the second transaction authorization request based on whether the logic of the computer-based payment network indicates the payment vehicle is enabled or disabled;

declining the second electronic payment transaction responsive to determining to decline the second transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is disabled;

receiving, from the computer device, a second electronic text message comprising a second command to enable the payment vehicle for subsequent use in making electronic payments; and

updating, by the transaction engine of the computing system, the logic of the computer-based payment network to indicate the payment vehicle has been enabled for subsequent electronic payment transactions.

11. The computing system of claim 10 , the computing system further configured to transmit, after updating the logic of the computer-based payment network to indicate the payment vehicle has been disabled, an electronic confirmation message to the computer device to indicate the payment vehicle is disabled.

12. The computing system of claim 10 , the computing system further configured to:

receive a third transaction authorization request for a third electronic payment transaction involving the payment vehicle;

determine whether to authorize or decline the third transaction authorization request based on whether the logic of the computer-based payment network associated with the payment vehicle indicates the payment vehicle is enabled or disabled; and

process the third electronic payment transaction responsive to determining to authorize the third transaction authorization request based on the logic of the computer-based payment network indicating that the payment vehicle is enabled.

13. The computing system of claim 10 , the computing system further configured to transmit, after updating the logic of the computer-based payment network to indicate the payment vehicle has been enabled, an electronic confirmation message to the computer device to indicate the payment vehicle is enabled.

14. The computing system of claim 10 , wherein the first transaction authorization request is received from a merchant point-of-sale (POS) terminal, and wherein authorizing the first electronic payment transaction comprises transmitting an electronic approval to the merchant POS terminal.

15. The computing system of claim 10 , wherein the user input includes a text string indicating the payment vehicle is to be disabled.

16. The computing system of claim 10 , wherein the computing system is a financial institution computing system associated with an issuer of the payment vehicle.

17. The computing system of claim 10 , wherein the computing system is part of a computer-based electronic payment network through which electronic payment transactions involving the payment vehicle are processed.

18. The computing system of claim 10 , the computing system further configured to electronically receive, prior to receiving the electronic text message, a request from the computer device to enroll in a card enabling and disabling program.