Abstract: The LOST registration request reception unit acknowledges a direction to cause an imaging device to capture an image and to acknowledge identification information of the imaging device. A device information reception unit acknowledges from the imaging device the identification information of the imaging device via a network. A device information examination unit directs an image to be captured when the identification information acknowledged by the LOST registration request reception unit and the identification information acknowledged by the device information reception unit match. An imaged data reception unit acknowledges the image. An imaged data transmission unit transmits the image.