To more properly manage information about an image forming device not connected to a network.

A set sheet of paper is read by a scanner and a test image is taken in as image data (S200). The test image is analyzed to determine the print function of a printer, and the part of a two-dimensional code incorporated in the test image is analyzed and converted into performance information (S210, S220). The status of the printing function and the performance information are registered in a database and the service process of the printer for a user is set based on the status of the print function and the performance information (S230, S240). As a result, information about the image forming device not connected to the network is managed more properly and it is made easier to collect information about the image forming device and diagnose the device's function.