1. A computer program that includes instructions which when executed on a computer cause the computer to execute: displaying a standard image that has been previously chosen by the user as an image for password input; displaying at least one dummy image that substantially looks like the standard image; making the user select a predetermined first section in the standard image; making the user select a second section in the dummy image; generating a password based on information corresponding to the first section and not generating a password based on information corresponding to the second section; and inputting the password as a password for a password verification of the user.