Patent ID: 8353004

Claim:
An authentication device for performing individual verification by imaging a face of a person to be authenticated, the authentication device comprising: an imaging step of imaging the face of the person to be authenticated by an imaging device of the authentication device; an imaging direction determining step of determining whether the imaging device captured an image of the face of the person to be authenticated from a direction that is diagonally below the face of the person; a determining step of determining that the image captured is not of the person to be authenticated when the imaging direction determining step determines that the imaging device captures the image of the face of the person to be authenticated from a direction that is not diagonally below the face; and a checking step of performing a checking process to determine whether the person to be authenticated is a person in question, the checking step performing the checking process when the imaging direction determining step determines that the imaging device captures the image of the face from a direction that is diagonally below the face.