In resent years, in the field of virtual reality various system have been proposed to enhance virtual experience by providing haptic sensations. In our research we propose a handheld sized interface which can represent both shapes and textures of virtual objects. Using the metaphor of a rolling pin, we propose a rolling-pin-based interface, named a Petanko Roller, which enables users to experience the sensation of rolling out virtual doughy objects. The interface represents unevenness of virtual objects and the frictional forces acting on them. This time, we report the system design, implementation, an application for entertainment, and users' feedbacks in exhibitions.
