Abstract: A system and method for registering a password includes a data center that processes and stores transaction data, and a teller window transaction device communicating with the data center. The teller window transaction device has a first input device such as a keyboard used by a teller for inputting transaction data, a first display unit used by the teller for displaying the transaction data, a second input device such as an input panel used by the customer, and a second display unit used by the customer for displaying the transaction data. When a new customer's card is issued, the first input device is used by the teller for inputting information such as the customer's name and address, and this information is shown on the second display unit as well as the first display unit so that the customer can confirm that it has been accurately entered. Thereafter the customer is prompted to use the second input device to enter a secret password, which has not been disclosed to the teller.