Authentication device and authentication server

An authentication server comprising

• a storage unit for storing:
• authentication device information that includes an authentication device ID and identification information of a region used for authentication;
• and card information that includes a card ID, card image data made by photographing an entirety of a card from a front, and identification information of each region in the card image data, wherein
• the identification information of the region includes image data of the region and endpoint coordinates that designate the region, the server further comprising:
• an authentication range setting unit for searching authentication device information in the storage unit by using an authentication device ID as a key, for obtaining identification information of a region that corresponds to a found authentication device ID, for searching card information in the storage unit by using a card ID as a key, and for obtaining endpoint coordinates of the obtained identification information of the region and image data of the region which correspond to a found card ID, when the authentication range setting unit receives the authentication device ID and the card ID from an identification device through a communication line;
• an authentication range notification unit for notifying the authentication device of the obtained endpoint coordinates;
• an authentication processing unit for judging whether or not image data of a region retrieved on the basis of the endpoint coordinates is identical to image data of the region obtained by the authentication range setting unit, when the authentication processing unit receives from the authentication device an authentication device ID, a card ID, and the image data of the region that was retrieved on the basis of the endpoint coordinates;
• and
• an authentication result notification unit for giving an authentication OK notice to the authentication device when it is judged that the received image data of the region is identical to the obtained image data of the region, and for giving an authentication NG notice to the authentication device when it is judged that the received image data of the region is not identical to the obtained image data of the region.