We propose a projection-based olfactory display method as an unencumbering way to deliver smells using a scent projector. This device allows us to deliver smells both spatially and temporally by carrying scented air within a vortex ring launched from an air cannon. However, our original scent projector had a problem: users often felt a significant, unnatural airflow when the vortex ring hit their faces. In this paper, we propose a novel configuration of a projection-based olfactory display that reduces this breeze effect. We use two air cannons that launch vortex rings that collide at a target point and break by themselves, distributing their smell at the point where they were broken to make a small "spot" of scent. With this configuration, users feel as if the smell came with a soft breeze, so that they can enjoy a more natural olfactory experience.

This paper presents work carried out for a project to develop a new interactive technique that combines haptic sensation with computer graphics. The project has two goals. The first is to provide users with a spatially continuous surface on which they can effectively touch an image using any part of their bare hand, including the palm. The second goal is to present visual and haptic sensation simultaneously by using a single device that doesn't oblige the user to wear any extra equipment. In order to achieve these goals, we designed a new interface device comprising of a flexible screen, an actuator array and a projector. The actuator deforms the flexible screen onto which the image is projected. The user can then touch the image directly and feel its shape and rigidity. Initially we fabricated two prototypes, and their effectiveness is examined by studying the observations made by anonymous users and a performance evaluation test for spatial resolution.

The Gait Master is a locomotion interface that creates a sense of walking on an uneven surface. The device employs a turntable on which two motion platforms (one for each foot) are mounted. The motion platforms track the feet and carry them back to their neutral position. The user can physically walk in a virtual space while their position is maintained. The motion platforms move vertically, which simulates an uneven surface. The walker can climb up or go down a virtual staircase while their position is maintained. The turntable rotates the two motion platforms, so that the walker can walk in any direction. We have developed two prototypes and have evaluated them through user studies.