Matthias Hoppe

schoolLudwig Maximilian University of Munichbar_chart#1895 Global Rank

Total Papers

HCI Rank

#1895

Research Areas

Years Active

Recent Publications

Exploring Redirection and Shifting Techniques to Mask Hand Movements from Shoulder-Surfing Attacks during PIN Authentication in Virtual Reality

The proliferation of mobile Virtual Reality (VR) headsets shifts our interaction with virtual worlds beyond our living rooms into shared spaces. Consequently, we are entrusting more and more personal data to these devices, calling for strong security measures and authentication. However, the standard authentication me…

DIS '244th AuthorGenerative AI (Text, Image, Music, Video) +2

The AI Ghostwriter Effect: When Users do not Perceive Ownership of AI-Generated Text but Self-Declare as Authors

Human-AI interaction in text production increases complexity in authorship. In two empirical studies (n1 = 30 & n2 = 96), we investigate authorship and ownership in human-AI collaboration for personalized language generation. We show an AI Ghostwriter Effect: Users do not consider themselves the owners and authors of…

MOBILEHCI '23CorrespondingSocial & Collaborative VR +1

VR-Hiking: Physical Exertion Benefits Mindfulness and Positive Emotions in Virtual Reality

Exploring the great outdoors offers physical and mental health benefits. Hiking is healthy, provides a sense of accomplishment, and offers an opportunity to relax. However, a nature trip is not always possible, and there is a lack of evidence showing how these beneficial experiences can be replicated in Virtual Realit…

CHI '221st AuthorImmersion & Presence Research +1

There Is No First- or Third-Person View in Virtual Reality: Understanding the Perspective Continuum

Modern games make creative use of First- and Third-person perspectives (FPP and TPP) to allow the player to explore virtual worlds. Traditionally, FPP and TPP perspectives are seen as distinct concepts. Yet, Virtual Reality (VR) allows for flexibility in choosing perspectives. We introduce the notion of a perspective…

CHI '201st AuthorHaptic Wearables +1

A Human Touch: Social Touch Increases the Perceived Human-likeness of Agents in Virtual Reality

Virtual Reality experiences and games present believable virtual environments based on graphical quality, spatial audio, and interactivity. The interaction with in-game characters, controlled by computers (agents) or humans (avatars), is an important part of VR experiences. Pre-captured motion sequences increase the v…

CHI '191st AuthorFoot & Wrist Interaction +1

VRsneaky: Increasing Presence in VR Through Gait-Aware Auditory Feedback

While Virtual Reality continues to increase in fidelity, it remains an open question how to effectively reflect the user's movements and provide congruent feedback in virtual environments.We present VRsneaky, a system for producing auditory movement feedback, which helps participants orient themselves in a virtual env…

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