TransPortal: A Portable Portal-Based Locomotion Technique

In VR video games, users can explore virtual worlds by physically walking in the real world or by using alternative locomotion techniques such as teleportation or steering. However, these techniques often pose challenges, including disorientation or sickness. This study presents TransPortal, a novel portal-based locomotion technique for VR video games. The proposed technique allows users to manipulate a marker object to specify a destination and to move there through a portal that can be freely activated or deactivated. To evaluate the proposed method, we conducted a within-subjects experiment with 30 participants, comparing it with traditional teleportation and steering. The results show that TransPortal induces lower VR sickness in a complex scenario without reducing immersion or entertainment quality.