7 papers
Visual Bias in Simulated Users: The Impact of Luminance and Contrast on Reinforcement Learning-based Interaction
Hannah Selder, Charlotte Beylier, Nico Scherf +1
Reinforcement learning (RL) enables simulations of HCI tasks, yet their validity is questionable when performance is driven by visual rendering artifacts distinct from interaction…
Who Explains Privacy Policies to Me? Embodied and Textual LLM-Powered Privacy Assistants in Virtual Reality
Vincent Freiberger, Moritz Dresch, Florian Alt +2
Virtual Reality (VR) systems collect fine-grained behavioral and biometric data, yet privacy policies are rarely read or understood due to their complex language, length, and poor…
Helping Johnny Make Sense of Privacy Policies with LLMs
Vincent Freiberger, Arthur Fleig, Erik Buchmann
Understanding and engaging with privacy policies is crucial for online privacy, yet these documents remain notoriously complex and difficult to navigate. We present PRISMe, an inte…
A Retrospective on Ultrasound Mid-Air Haptics in HCI
Arthur Fleig
In 2013, the UltraHaptics system demonstrated that focused ultrasound could generate perceivable mid-air tactile sensations, building on earlier explorations of airborne ultrasound…
Explainable AI in Usable Privacy and Security: Challenges and Opportunities
Vincent Freiberger, Arthur Fleig, Erik Buchmann
Large Language Models (LLMs) are increasingly being used for automated evaluations and explaining them. However, concerns about explanation quality, consistency, and hallucinations…
"You don't need a university degree to comprehend data protection this way": LLM-Powered Interactive Privacy Policy Assessment
Vincent Freiberger, Arthur Fleig, Erik Buchmann
Protecting online privacy requires users to engage with and comprehend website privacy policies, but many policies are difficult and tedious to read. We present the first qualitati…