A password generating system includes a scanner, a coordinate obtaining unit, a writing information obtaining unit, a track obtaining unit, a dividing unit, a converter, and an output unit. The scanner includes a stylus part performing writing on a print medium with a code indicating coordinates in a password setting region. The scanner scans the code. The coordinate obtaining unit obtains the coordinates from the code. The writing information obtaining unit obtains writing information specifying the order of writing. The track obtaining unit obtains the track of writing based on the obtained coordinates and writing information. The dividing unit divides obtained tracks into units convertible to symbols. The converter converts the track in each unit into a symbol. The output unit obtains a symbol string by arranging obtained symbols in an order based on the order of writing, and outputs the symbol string as a password.