<p>[PROBLEMS] To provide a system for making a report with an authenticated image, in which the imaging time of an image captured by a portable telephone with a camera is certified with an objective time, and image information can be authenticated. [MEANS FOR SOLVING PROBLEMS] A report making program for making a work report is downloaded in a portable terminal (1) with a camera having a Web browser from a Web server (2). Report data such as an image and information inputted according to the report making program is sent from the portable terminal (1) to the Web server (2). The Web server transfers the report data to a document management program, and the document management program automatically sorts the report data according to the information category of the report data and stores it. The imaging time of the image information included in the report data or the image information contained in the report made on the basis of the report data are authenticated with a reference time of the Web server (2).</p>
