
The existing movement methods in virtual reality (VR) have largely been designed under the assumption that users are either sitting or standing. However, there is a growing interest in using VR for medical or rehabilitation purposes, as well as for relaxation applications. This highlights the need for suitable locomotion methods when experiencing VR in a lying position. This paper explores factors to maintaining immersion and convenience when users are lying down, and we propose a space-floating movement method and relevant vibrotactile feedback.