João Guerreiro

schoolUniversity of Lisbonbar_chart#697 Global Rank

Total Papers

HCI Rank

#697

Research Areas

Years Active

Recent Publications

Perspectives on Mixed-Ability Competition

Competition is typically centered on balance, fairness, and symmetric play. However, in mixed-ability competition, symmetric play is often not possible or desirable. Currently, it is not clear what can or should be done in the pursuit of the design of inclusive competitive experiences (in sports and games). In this p…

CHI '25CorrespondingFull-Body Interaction & Embodied Input +1

Designing and Evaluating a VR Boxing Experience with Blind People

Virtual Reality (VR) offers immersive experiences through advanced interaction mechanisms and rich sensory stimuli but is often inaccessible to blind people due to its over-reliance on visual feedback. While prior work has investigated specific aspects of VR accessibility, there is little knowledge on how to design fu…

CHI '245th+ AuthorSerious & Functional Games +1

A Living Framework for Understanding Cooperative Games

Playing cooperative games is recognised as a positive social activity. Yet, we have limited means to rigorously define or communicate the structures that govern these experiences, hindering attempts at consolidating knowledge and limiting the potential of design efforts. In this work, we introduce the Living Framework…

CHI '24CorrespondingVisual Impairment Technologies (Screen Readers, Tactile Graphics, Braille)

Investigating Virtual Reality Locomotion Techniques with Blind People

Many Virtual Reality (VR) locomotion techniques have been proposed, but those explored for and with blind people are often custom-made or require specialized equipment. Consequently, it is unclear how popular techniques can support blind people's VR locomotion, blocking access to most VR experiences. We implemented th…

CHI '244th AuthorGame UX & Player Behavior +1

The Trick is to Stay Behind?: Defining and Exploring the Design Space of Player Balancing Mechanics

In multiplayer gaming, skill disparity can lead to frustrating and excluding experiences. Balancing approaches exist to level the playing field (e.g., providing aim assistance to low-performing players), but it is unclear how different design choices affect individual player experience. We first introduce a design spa…

CHI '234th AuthorBest PaperDeaf & Hard-of-Hearing Support (Captions, Sign Language, Vibration) +2

“My Zelda Cane”: Strategies Used by Blind Players to Play Visual-Centric Digital Games

Mainstream games are typically designed around the visual experience, with behaviors and interactions highly dependent on vision. Despite this, blind people are playing mainstream games while dealing with and overcoming inaccessible content, often together with friends and audiences. In this work, we analyze over 70 h…

CHI '202nd AuthorVibrotactile Feedback & Skin Stimulation +2

Investigating the Opportunities for Technologies to Enhance QoL with Stroke Survivors and their Families

There are over 80 million stroke survivors globally, making it the main cause of long-term disability worldwide. Not only do the challenges associated with stroke affect the quality of life (QoL) of survivors, but also of their families. To explore these challenges and define design opportunities for technologies to i…

CHI '191st AuthorVisual Impairment Technologies (Screen Readers, Tactile Graphics, Braille) +1

Airport Accessibility and Navigation Assistance for People with Visual Impairments

People with visual impairments often have to rely on the assistance of sighted guides in airports, which prevents them from having an independent travel experience. In order to learn about their perspectives on current airport accessibility, we conducted two focus groups that discussed their needs and experiences in-d…

CHI '193rd AuthorTeleoperated Driving +1

BBeep: A Sonic Collision Avoidance System for Blind Travellers and Nearby Pedestrians

We present an assistive suitcase system, BBeep, for supporting blind people when walking through crowded environments. BBeep uses pre-emptive sound notifications to help clear a path by alerting both the user and nearby pedestrians about the potential risk of collision. BBeep triggers notifications by tracking pedestr…

CHI '183rd AuthorVisual Impairment Technologies (Screen Readers, Tactile Graphics, Braille) +2

SIG: Making Maps Accessible and Putting Accessibility in Maps

Digital maps represent an incredible HCI success—they have transformed the way people navigate in and access information about the world. While these platforms contain terabytes of data about road networks and points of interest (POIs), their information about physical accessibility is commensurately poor. Moreover, b…

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