A system uses portable processing devices that communicate with external devices. A portable processing device having a camera transmits, to a server, an identification information request message including an image acquired by the camera; receives, from the server, identification information related to an object shown in the image; in response to user selection of the object, transmits, to the server, a data request message requesting data corresponding to the identification information of the selected object; receives, from the server, a first data corresponding to the identification information; edits the first data to provide a second data in response to user input information; and transmits the second data to the server enabling the server to update the first data to provide the second data item.