IMAGE PROCESSING DEVICE, AUTHENTICATION METHOD, AND NON-TRANSITORY STORAGE MEDIUM STORING AUTHENTICATION PROGRAM

摘要

To maintain confidentiality by a simile authentication procedure. An image processing device includes an input receiver configured to receive an input of an authentication pattern that is a trajectory of contact coordinates indicating a contact position on an operation unit; and a concatenation image display unit configured to display an image connecting, out of a plurality of predetermined images that are displayed on the operation unit, a part of the predetermined images that includes a fist predetermined image and a second predetermined image of the predetermined images that are connected by the trajectory, wherein, prior to a display area of the first predetermined image overlapping the contact coordinates, a display area of the second predetermined image overlaps the contact coordinates.