Abstract: There has been no method for authenticity assessment which can be performed by ordinary people using an identification mark which absolutely cannot be duplicated. A minute mark is printed on a medium as an identification mark. An image of the identification mark having a minute shape which is formed by fixing a printing substance and which cannot be artificially controlled are memorized, and the image are stored together a serial number of the article as a master image. The article is placed on the market together with a warranty card including the identification mark. An ordinary person gets access to the webpage of an authenticity assessment management center, transmits the serial number of the target article, magnifies the identification mark on the warranty card by a microscope, captures an image of the identification mark with a camera-equipped cell-phone, and then transmits the image to the authenticity assessment management center.

Abstract: An output items to be finally obtained by computer software which is a development object are determinded, these items are prescribed using a data generation equation using interim data items, and all the interim data items are prescribed by separate data generation equations. This is continued until all new data items are prescribed by input data, and prescriptions of the data items, data generation equation, and data generation execution condition and the like obtained as the result constitute requirement definition. Furthermore, the requirement definition obtained in this manner is applied to a method of automatically finding a process order of data items based on the definition, or automatically establishing data in a correct order to automatically develop a program, and accordingly the software to be finally obtained is automatically developed.