Stamping is a very simple and old way of cultural behavior. Moreover, it has been used widely even though we have efficient electrical methods. Stamp can be used to show a person's strong confidence or assurance and it psychologically affects people for cultural reasons, especially in Asia. We propose a mobile application that users can get stamps virtually with this application. This application brings people to get good use of the emotional merit of the stamping and the portability of the mobile device. We had two tests to show what factors arouse people to do something, and we generalized it to extract cultural essentials. Stamping was not only a psychological factor of the system, but it also has important contents. We can design attractive interfaces to utilize cultural data and behaviors.