Patent attributes
A method includes receiving a fund access request from a user device associated with a user; generating a tokenized card number based on an actual card account number of the user that substitutes the actual card account number in a payment transaction; providing a code to the user device including the tokenized card number and a numeric or alphanumeric string of values; determining that the numeric or alphanumeric string of values in the code transmitted to the user device matches a numeric or alphanumeric string of values in a field of a code received from a separate computer system; determining that a location of the user device matches a merchant location; authenticating the payment transaction based on the numeric or alphanumeric match and the location match; and, transmitting the actual card account number to the separate computer system as part of the payment transaction.
