What we did:We conducted a study to explore the influence of different undo techniques for object manipulation in multi-user Virtual Reality in various collaboration modes.
What we found:We found that users desire and effectively utilize undo functionalities in Virtual Reality, with the type of undo technique significantly impacting users' performance and social connectedness.
Takeaway:Our findings suggest that integrating well-designed undo mechanics into multi-user Virtual Reality applications can enhance user experience by allowing easier recovery from mistakes and fostering social connections among users.
Abstract
With the proliferation of VR and a metaverse on the horizon, many multi-user activities are migrating to the VR world, calling for effective collaboration support. As one key feature, traditional collaborative systems provide users with undo mechanics to reverse errors and other unwanted changes. While undo has been extensively researched in this domain and is now considered industry standard, it is strikingly absent for VR systems in research and industry. This work addresses this research gap by exploring different undo techniques for basic object manipulation in different collaboration modes in VR. We conducted a study involving 32 participants organized in teams of two. Here, we studied users’ performance and preferences in a tower stacking task, varying the available undo techniques and their mode of collaboration. The results suggest that users desire and use undo in VR and that the choice of the undo technique impacts users’ performance and social connection.
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We built UndoPort, an extension of the point-and-teleport locomotion technique that incorporates undo actions for reverting position and orientation changes in Virtual Reality.
We conducted a user study to explore the impact of asynchronous first- and third-person perspectives and gaze visualizations on the efficiency, embodiment, and social connectedness during manual tasks in Extended Reality.
We designed and implemented three intention communication methods for multi-user locomotion in Virtual Reality, comparing them with two baseline methods in a controlled experiment.
