The invention is a sheet feeder including a skimmer and a separator. The financial device comprise a registered medium storage box storing a medium to be registered and withdrawn, a discrimination part recognizing information of the registered medium withdrawn from the registered medium storage box, a display unit displaying a screen on which the registered medium to be withdrawn is registered, and a control part controlling the display unit. The method includes reading data from the handheld computer and writing the data at least temporarily to a database on the computer system.