1. A method of modifying a set of rules of a payment transaction system, the method comprising: in response to a transaction initiated with a payment card of a user, electronically receiving from a point of sale terminal a transaction request or an authorization request associated with the transaction; responsive to the transaction request or authorization request, electronically transmitting to a first electronic device associated with the user a request for input from the user; using a second computing device associated with an entity different from the user, receiving the input from the user, wherein the second computing device is programmed to apply a set of rules associated with the payment card of the user; applying the set of rules to the transaction request or authorization request; responsive to the received input from the user, automatically modifying, using the second computing device, the set of rules based on the received input from the user for application of the modified set of rules to a future transaction, a future transaction request, or a future authorization request associated with the user; applying the modified set of rules to the future transaction, the future transaction request or the future authorization request associated with the user; and modifying one or more rules from the set of rules based on additional input provided by the user prior to the transaction.
1. A method of modifying a set of rules of a payment transaction system, the method comprising: in response to a transaction initiated with a payment card of a user, electronically receiving from a point of sale terminal a transaction request or an authorization request associated with the transaction; responsive to the transaction request or authorization request, electronically transmitting to a first electronic device associated with the user a request for input from the user; using a second computing device associated with an entity different from the user, receiving the input from the user, wherein the second computing device is programmed to apply a set of rules associated with the payment card of the user; applying the set of rules to the transaction request or authorization request; responsive to the received input from the user, automatically modifying, using the second computing device, the set of rules based on the received input from the user for application of the modified set of rules to a future transaction, a future transaction request, or a future authorization request associated with the user; applying the modified set of rules to the future transaction, the future transaction request or the future authorization request associated with the user; and modifying one or more rules from the set of rules based on additional input provided by the user prior to the transaction. 13. The method of claim 1 , wherein said electronically transmitting a request for input from the user includes transmitting the request to a third party designated by the user instead of the user, the third party being an agent of the user or a non-financial entity authorized by the user to hold authority over the account of the user.