Hybrid User Interfaces for Multiple Views: why designer intuition is not enough.

How to arrange multiple views (MVs) in immersive environments to present information is a common problem addressed by human-computer interaction (HCI) and user experience (UX) studies. Specifically, for hybrid user interfaces (UIs) that use multiple interactive devices in an immersive environment, the MV layouts are often based on expert opinion instead of empirically validated guidelines. Thus this paper makes the case that design guidelines for multi-view layouts in hybrid user interfaces are needed as existing guidelines for MV layouts in Virtual Reality (VR), Augmented Reality (AR) and Mixed Reality (MX) environments often are focused on a single interactive device instead of hybrid user interfaces. Moreover, often current guidelines tend to lack empirical support and are not cohesive. Our work further argues that such guidelines need to be based on empirical evidence. In addition, it summarizes existing related work on MVs for hybrid user interfaces and discusses the basics for running controlled experiments and establishing evidence-based design guidelines for the layout of MVs in hybrid UIs.