A method and system of smart card banking utilizes a contactless communication interface, such as infrared or a wireless or radio frequency interface, including, for example, a proximity interface. A contactless communication is initiated for a smart card user between a smart card application and the on-line system of a financial institution, such as a bank, the system verifies authorization for the communication, the information is communicated for the user to the on-line system. The contactless communication is initiated, and the information is communicated, for example, between a contactless interface transceiver of a personal data assistant, into which the smart card is inserted, and the contactless interface transceiver of an on-line terminal. Alternatively, the contactless communication is initiated, and the information is communicated between a contactless interface transceiver of the smart card and the contactless interface transceiver of the terminal.