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• Understanding the Touchscreen-based Nonvisual Target Acquisition Task Performance of Screen Reader Users

  Hwayeon Joh, Yun Jung Lee, Uran Oh · 2022 · Proceedings of the 19th International Web for All Conference (W4A 2022)

  This study investigates how screen reader users find and select targets on a smartphone touchscreen without visual cues, examining the effects of screen size, target size, and the ratio between them. Twelve participants with visual impairments (three totally blind, three with…

  touchscreen · screen readers · target acquisition · mobile accessibility · visual impairment

• Enhancing Android Accessibility for Users with Hand Tremor by Reducing Fine Pointing and Steady Tapping

  Yu Zhong, Astrid Weber, Casey Burkhardt, Phil Weaver, Jeffrey P. Bigham · 2015 · Proceedings of the 12th International Web for All Conference (W4A)

  This paper introduces Touch Guard, a system-wide Android accessibility service developed as a Google intern research project that helps users with hand tremor interact more accurately with touchscreen devices. The core problem addressed is that conventional touchscreen…

  mobile accessibility · touchscreen accessibility · hand tremor · motor impairment · Android

• Effects of Target Expansion on Selection Performance in Older Computer Users

  Faustina Hwang, Nic Hollinworth, Nitin Williams · 2013 · ACM Transactions on Accessible Computing

  This research investigates target expansion as an assistive technique for improving mouse pointing performance in older computer users. Target expansion dynamically enlarges clickable targets as the cursor approaches, conserving screen space while providing larger click areas…

  older adults · motor impairment · pointing · mouse · target acquisition

• Towards Accessible Touch Interfaces

  Tiago Guerreiro, Hugo Nicolau, Joaquim Jorge, Daniel Gonçalves · 2010 · Proceedings of the 12th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2010)

  This paper presents an empirical evaluation of touch screen interaction techniques with 15 tetraplegic users, aiming to provide evidence-based guidance for designing accessible mobile touch interfaces. The authors recognized that while touch screen devices eliminate the need for…

  touch screen accessibility · motor impairment · tetraplegia · mobile devices · interaction techniques

• Exploring Methods to Improve Pen-Based Menu Selection for Younger and Older Adults

  Karyn Moffatt, Joanna McGrenere · 2009 · ACM Transactions on Accessible Computing

  This study investigates why users struggle with pen-based menu selection on tablet PCs, particularly older adults, and tests two approaches for reducing errors. Building on a baseline study that identified three error types (slipping, drifting, and "missing just below"), the…

  pen input · tablet PC · older adults · target acquisition · motor impairments

• Increasing the Accessibility of Pen-Based Technology: An Investigation of Age-Related Target Acquisition Difficulties

  Karyn Moffatt · 2007 · SIGACCESS Accessibility and Computing

  This paper describes dissertation research on improving the accessibility of pen-based devices (PDAs, Tablet PCs) for older adults by identifying and addressing the root causes of target acquisition difficulty. The author argues that previous research on target acquisition…

  aging · motor accessibility · input device · interaction design · target acquisition

• Slipping and drifting: using older users to uncover pen-based target acquisition difficulties

  Karyn A. Moffatt, Joanna McGrenere · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '07)

  Moffatt and McGrenere present an empirical study at the University of British Columbia investigating the underlying causes of pen-based target acquisition difficulty on a Tablet PC, with explicit attention to how age affects targeting ability. Thirty-six right-handed…

  target acquisition · pen-based interaction · stylus · tablet PC · older adults

• A comparison of area pointing and goal crossing for people with and without motor impairments

  Jacob O. Wobbrock, Krzysztof Z. Gajos · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '07)

  Wobbrock and Gajos at the University of Washington present a controlled study comparing two fundamentally different target-acquisition paradigms — conventional area pointing (move into a confined region and click) and goal crossing (sweep the cursor across a goal line, no click…

  target acquisition · goal crossing · area pointing · Fitts' law · steering law

• Barrier pointing: using physical edges to assist target acquisition on mobile device touch screens

  Jon Froehlich, Jacob O. Wobbrock, Shaun K. Kane · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '07)

  Froehlich, Wobbrock and Kane propose barrier pointing: a set of stylus-based target acquisition techniques that exploit the raised physical edge of a mobile touch screen to stabilise input for users with motor impairments. Standard touch-screen tapping requires a user to fly the…

  mobile accessibility · touchscreen accessibility · motor impairment · target acquisition · input techniques

• Developing Steady Clicks: A Method of Cursor Assistance for People with Motor Impairments

  Shari Trewin, Simeon Keates, Karyn Moffatt · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from IBM Research and the University of British Columbia presents Steady Clicks, a cursor assistance feature designed to reduce clicking errors for mouse users with motor impairments. The system addresses three specific error types identified in prior empirical…

  motor impairment · cursor assistance · mouse input · clicking errors · target acquisition

• Mouse Movements of Motion-Impaired Users: A Submovement Analysis

  Faustina Hwang, Simeon Keates, Patrick Langdon, John Clarkson · 2003 · Proceedings of the 6th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '04)

  This paper presents a detailed submovement analysis of mouse cursor trajectories from six motion-impaired users (four with cerebral palsy of varying types — athetoid, athetoid with spasm, and general — and one with Friedrich's ataxia and tremor) and three able-bodied controls…

  motor disability · cursor control · pointing device · target acquisition · cerebral palsy

• Cursor Measures for Motion-Impaired Computer Users

  Simeon Keates, Faustina Hwang, Patrick Langdon, P. John Clarkson, Peter Robinson · 2002 · Proceedings of the Fifth International ACM Conference on Assistive Technologies (Assets '02)

  This paper systematically analyses cursor movement patterns of motion-impaired computer users to understand the specific difficulties they face with point-and-click interactions in graphical user interfaces. The authors argue that existing cursor measures, primarily developed by…

  motor disability · pointing device · cursor control · target acquisition · force feedback

• Low Vision: The Role of Visual Acuity in the Efficiency of Cursor Movement

  Julie A. Jacko, Armando B. Barreto, Gottlieb J. Marmet, Josey Y. M. Chu, Holly S. Bautsch, Ingrid U. Scott, Robert H. Rosa · 2000 · Proceedings of the Fourth International ACM Conference on Assistive Technologies (Assets '00)

  This study investigates how visual acuity affects cursor movement efficiency for users with Age-related Macular Degeneration (AMD), the leading cause of visual impairment for Americans aged 75 and older. The researchers note that while existing accessibility research has focused…

  low vision · age-related macular degeneration · cursor movement · graphical user interface · icon size

• Neck Range of Motion and Use of Computer Head Controls

  Edmund LoPresti, David M. Brienza, Jennifer Angelo, Lars Gilbertson, Jonathan Sakai · 2000 · Proceedings of the Fourth International ACM Conference on Assistive Technologies (Assets '00)

  This study from the University of Pittsburgh investigates the relationship between neck range of motion and performance when using computer head controls — devices that translate head movements into cursor movements on screen. The research involved 15 subjects without…

  alternative input · head tracking · motor disability · multiple sclerosis · spinal cord injury

• A Framework of Assistive Pointers for Low Vision Users

  Julie Fraser, Carl Gutwin · 2000 · Proceedings of the Fourth International ACM Conference on Assistive Technologies (Assets '00)

  This paper from the University of Saskatchewan proposes a four-dimensional framework for systematically exploring the design space of assistive mouse pointers for low vision computer users. The authors argue that while various pointer assistance techniques exist — such as…

  low vision · mouse pointer · cursor movement · screen magnification · design frameworks

15 results.