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• Demonstration of GestureCalc: An Eyes-Free Calculator for Touch Screens

  Leah Perlmutter, Bindita Chaudhuri, Justin Petelka, Philip Garrison, James Fogarty, Jacob O. Wobbrock, Richard E. Ladner · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This demonstration paper presents GestureCalc, an eyes-free, target-less digital calculator for touch screen devices that replaces traditional button-based input with intuitive gesture-based input. The core problem is that existing calculator apps require precise tapping on…

  gesture-based interaction · touchscreen accessibility · blindness · visual impairment · screen reader

• Typing Slowly but Screen-Free: Exploring Navigation over Entirely Auditory Keyboards

  Reeti Mathur, Aishwarya Sheth, Parimal Vyas, Davide Bolchini · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper introduces the concept of "keyflows" — entirely auditory keyboards that operate without a reference screen, enabling blind users to type while untethered from their mobile device. The core problem is that current accessible keyboards require blind users to constantly…

  text entry · blindness · visual impairment · screen reader · auditory interface

• GestureCalc: An Eyes-Free Calculator for Touch Screens

  Bindita Chaudhuri, Leah Perlmutter, Justin Petelka, Philip Garrison, James Fogarty, Jacob O. Wobbrock, Richard E. Ladner · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This full research paper presents GestureCalc, an eyes-free, target-less gesture-based calculator for touch screens, along with a rigorous three-session longitudinal evaluation with eight screen reader users. The system replaces the spatial button layout of conventional…

  gesture-based interaction · touchscreen accessibility · blindness · visual impairment · screen reader

• Sidewalk, A Wayfinding Message Syntax for People with a Visual Impairment

  Joey van der Bie, Christina Jaschinski, Somaya Ben Allouch · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This poster paper introduces Sidewalk, a structured wayfinding message syntax designed to improve navigation instructions for people with visual impairments (PVI) using mobile applications. The authors argue that traditional turn-by-turn navigation apps fail PVI because they…

  visual impairment · wayfinding · navigation · natural language · mobile accessibility

• The Design Space of Nonvisual Word Completion

  Hugo Nicolau, Andre Rodrigues, Andre Santos, Tiago Guerreiro, Kyle Montague, Joao Guerreiro · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents the first design space for nonvisual word completion on mobile devices, addressing a gap where word completion interfaces — ubiquitous in sighted mobile typing — remain poorly designed for screen reader users. While sighted users can glance at three…

  blindness · text entry · mobile accessibility · screen readers · word prediction

• Research to Market Transition of Mobile Assistive Technologies for People with Visual Impairments

  Sergio Mascetti, Dragan Ahmetovic, Cristian Bernareggi · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper examines why so few mobile assistive technology research prototypes for people with visual impairments ever reach end users, and shares practical lessons from the authors’ experience developing and distributing three iOS apps through EveryWare Technologies, a…

  assistive technology · visual impairment · mobile accessibility · technology transfer · blind

• Leveraging Augmented Reality to Create Apps for People with Visual Disabilities: A Case Study in Indoor Navigation

  Chris Yoon, Ryan Louie, Jeremy Ryan, MinhKhang Vu, Hyegi Bang, William Derksen, Paul Ruvolo · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents Clew, an iOS app that leverages Apple’s ARKit augmented reality framework to help people who are blind or visually impaired (B/VI) navigate indoor environments — a setting where GPS is unreliable (accuracy drops to ~5m+ indoors). Clew uses visual-inertial…

  augmented reality · indoor navigation · orientation and mobility · blind · low vision

• Perception and Adoption of Mobile Accessibility Features by Older Adults Experiencing Ability Changes

  Rachel L. Franz, Jacob O. Wobbrock, Yi Cheng, Leah Findlater · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents the first empirical study exploring how older adults experiencing progressive ability changes perceive and adopt built-in mobile accessibility features on smartphones and tablets. The researchers conducted interviews with 14 older adults (aged 65-93, mean 77)…

  aging · older adults · mobile accessibility · ability-based design · accessibility features

• WatchOut: Obstacle Sonification for People with Visual Impairment or Blindness

  Giorgio Presti, Dragan Ahmetovic, Mattia Ducci, Cristian Bernareggi, Luca Ludovico, Adriano Baratè, Federico Avanzini, Sergio Mascetti · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents WatchOut, a sonification technique that conveys real-time information about obstacle characteristics to people who are blind or visually impaired (BVI) through non-verbal sound, enabling them to avoid obstacles while walking. The white cane, the primary…

  sonification · obstacle avoidance · blind · low vision · computer vision

• DarkReader: Bridging the Gap Between Perception and Reality of Power Consumption in Smartphones for Blind Users

  Jian Xu, Syed Masum Billah, Roy Shilkrot, Aruna Balasubramanian · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents DarkReader, a modified Android screen reader that truly turns off the smartphone screen while preserving full touchscreen interaction for blind users, saving 24-52% of power compared to the default TalkBack screen reader. The work addresses two problems blind…

  blind · screen readers · TalkBack · VoiceOver · Android

• Effects of Aging on Small Target Selection with Touch Input

  Afroza Sultana, Karyn Moffatt · 2019 · ACM Transactions on Accessible Computing

  This study provides a detailed analysis of age-related touch selection errors on small touchscreen devices, extending prior work on mouse and pen interaction to finger touch input. Twenty older adults (ages 67-81, M=73.3) and sixteen younger adults (ages 22-35, M=28.9) completed…

  older adults · aging · touchscreen · mobile accessibility · target selection

• The Current Status of Accessibility in Mobile Apps

  Shunguo Yan, P. G. Ramachandran · 2019 · ACM Transactions on Accessible Computing

  This large-scale empirical study evaluated the accessibility of 479 Android apps from Google Play across 23 business categories using IBM Mobile Accessibility Checker (MAC), an automated tool that maps accessibility rules to GUI widget categories. The study examined over 610,000…

  mobile accessibility · Android · automated testing · accessibility evaluation · GUI accessibility

• App Usage Predicts Cognitive Ability in Older Adults

  Mitchell L. Gordon, Leon Gatys, Carlos Guestrin, Jeffrey P. Bigham, Andrew Trister, Kayur Patel · 2019 · CHI Conference on Human Factors in Computing Systems

  This paper investigates how older adults use smartphones differently from younger adults and whether those differences can be explained by cognitive function. The researchers collected three months of iPhone usage data from 84 healthy older adults (aged 61-76), logging 494,641…

  older adults · cognitive decline · smartphone usage · mobile accessibility · digital biomarkers

• Airport Accessibility and Navigation Assistance for People with Visual Impairments

  João Guerreiro, Dragan Ahmetovic, Daisuke Sato, Kris Kitani, Chieko Asakawa · 2019 · Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems

  This paper investigates whether a BLE-beacon-based smartphone navigation system can enable visually impaired travelers to move through an airport independently — a setting where they are currently required to rely on airline-provided sighted escorts to reach the gate, and where…

  airport accessibility · blind navigation · indoor navigation · orientation and mobility · visual impairment

14 results.