Abstract: In accordance with an embodiment, an authentication apparatus comprises an image capturing device, a memory and a controller. The image capturing device photographs a person to acquire a captured image. The memory stores the captured image. The controller generates a determination reference of authentication on the basis of a plurality of the captured images and carries out the authentication of the person in the captured image on the basis of the determination reference.

Abstract: In accordance with an embodiment, an authentication apparatus comprises an image capturing device, a memory and a controller. The image capturing device photographs a person to acquire a captured image. The memory stores the captured image. The controller generates a determination reference of authentication on the basis of a plurality of the captured images and carries out the authentication of the person in the captured image on the basis of the determination reference.

Abstract: According to one embodiment, a data processing circuit included in a data processing apparatus together with plural peripheral circuits including a peripheral circuit configured to output first data includes a processing unit and a stop unit. The processing unit subjects the first data to data processing according to a specified processing algorithm to obtain second data. The stop unit stops the output of the second data to the outside of the data processing circuit in a stop period excluding a period from the time when the plural peripheral circuits finish starting in specified start order until the time when a specified time elapses after the plural peripheral circuits finish stopping in specified stop order.