John H Williamson

schoolGlasgow Universitybar_chart#2378 Global Rank

Total Papers

HCI Rank

#2378

Research Areas

Years Active

Recent Publications

SafeScreen: Evaluating a Screen-Detecting Smartphone Camera App under Benign and Adversarial Use

Camera-equipped smartphones pose security risks to organisations by allowing intentional or accidental leaks of confidential on-screen information. We introduce SafeScreen, an Android camera app that detects and obfuscates screen content in real-time using deep-learning recognition for distant screens and Moiré patter…

CHI '254th AuthorSocial & Collaborative VR +1

Understanding Social Interactions in Reality Versus Virtuality

Immersive realities enable social interactions that are radically different from traditional communication technologies, but how we experience immersion together is not yet indistinguishable from face-to-face interactions. Some social signals are not stable across realities, may change in semantics, or are missing al…

CHI '224th AuthorSocial & Collaborative VR +1

Digital Proxemics: Designing Social and Collaborative Interaction in Virtual Environments

Behaviour in virtual environments might be informed by our experiences in physical environments, but virtual environments are not constrained by the same physical, perceptual, or social cues. Instead of replicating the properties of physical spaces, one can create virtual experiences that diverge from reality by dynam…

CHI '222nd AuthorVibrotactile Feedback & Skin Stimulation +1

First Steps Towards Designing Electrotactons: Investigating Intensity and Pulse Frequency as Parameters for Electrotactile Cues.

Electrotactile stimulation is a novel form of haptic feedback. There is little work investigating its basic design parameters and how they create effective tactile cues. This paper describes two experiments that extend our knowledge of two key parameters. The first investigated the combination of pulse width and ampli…

AUTO_UI '182nd AuthorIn-Vehicle Haptic, Audio & Multimodal Feedback +1

May the Force Be with You: Ultrasound Haptic Feedback for Mid-Air Gesture Interaction in Cars

The use of ultrasound haptic feedback for mid-air gestures in cars has been proposed to provide a sense of control over the user's intended actions and to add touch to a touchless interaction. However, the impact of ultrasound feedback to the gesturing hand regarding lane deviation, eyes-off-the-road time (EORT) and p…

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