Patent ID: 8359005

Claim:
A computer-implemented method, comprising: embedding a reference to a user interface on an interchange computer system within a web page of a server computer system, the server computer system being different from the interchange computer system and the reference calling the user interface from the interchange computer system; transmitting the user interface in response to the call from the reference, the user interface including an identification field to receive an identifier, the web page being transmitted from the server computer system to a user terminal, the user terminal being different from the server computer system and the interchange computer system, and the user interface being located within the web page when displayed at the user terminal such that a user at the user terminal enters the account identifier in the identifier field; receiving the identifier in the interchange computer system via the user interface displayed within the web page at the user terminal; processing a charge based on the identifier at the interchange computer system; and displaying in the user interface an indication of the charge without the web page of the server computer system being reloaded.