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• What Health Topics Older Adults Want to Track: A Participatory Design Study

  Jennifer L. Davidson, Carlos Jensen · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '13)

  This paper presents a participatory design study investigating what health topics older adults (aged 65+) want to track using mobile health (mHealth) applications. The authors argue that most mHealth app developers fail to conduct needs assessments with older adult end users,…

  older adults · aging · participatory design · mHealth · mobile accessibility

• Follow That Sound: Using Sonification and Corrective Verbal Feedback to Teach Touchscreen Gestures

  Uran Oh, Shaun K. Kane, Leah Findlater · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '13)

  This paper proposes and evaluates two techniques for teaching touchscreen gestures to users with visual impairments: gesture sonification (mapping finger position to audio using pitch for the y-axis and stereo panning for the x-axis) and corrective verbal feedback…

  touchscreen accessibility · sonification · gesture learning · blind users · visual impairment

• How Power Wheelchair Users Choose Computing Devices

  Patrick Carrington, Amy Hurst, Shaun K. Kane · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This poster paper explores how power wheelchair users select and use computing devices in their daily lives. The researchers interviewed 8 power wheelchair or power scooter users (4 male, 4 female) through semi-structured interviews lasting up to two hours, cataloguing their use…

  motor impairment · wheelchair · mobile accessibility · device selection · assistive technology

• Exploring the Use of Speech Input by Blind People on Mobile Devices

  Shiri Azenkot, Nicole B. Lee · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper investigates how blind people use speech input on mobile devices through two studies: a survey of 169 participants (64 blind/low-vision, 105 sighted) and a laboratory study with 8 blind participants composing paragraphs on an iPod Touch using speech dictation versus…

  visual impairment · blindness · speech input · speech recognition · mobile accessibility

• The Feasibility of Eyes-Free Touchscreen Keyboard Typing

  Keith Vertanen, Haythem Memmi, Per Ola Kristensson · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This poster paper proposes a novel approach to eyes-free touchscreen typing where users imagine a QWERTY keyboard somewhere on the device and tap out an entire sentence without seeing the keyboard and without receiving any intermediate feedback about letters or words typed. This…

  visual impairment · text entry · eyes-free interaction · touchscreen · keyboard

• Physical Accessibility of Touchscreen Smartphones

  Shari Trewin, Cal Swart, Donna Pettick · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper examines touchscreen smartphone adoption and usability for people with dexterity impairments through interviews and hands-on observations with 16 participants (mean age 40) at a New York centre serving approximately 3,500 people with physical disabilities annually.…

  motor impairment · dexterity impairment · touchscreen · mobile accessibility · smartphone

• Accessible Photo Album: Enhancing the Photo Sharing Experience for People with Visual Impairment

  Susumu Harada, Daisuke Sato, Dustin W. Adams, Sri Kurniawan, Hironobu Takagi, Chieko Asakawa · 2013 · Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)

  This paper investigates how blind and partially sighted people can be supported not only in capturing photographs but in organising, recalling, and sharing them afterwards — a step that the authors argue has been largely neglected in prior blind-photography research. The study…

  blindness and low vision · mobile accessibility · assistive technology · photography · audiophotography

• Mobile Sign Language Translation System for Deaf Community

  Mehrez Boulares, Mohamed Jemni · 2012 · Proceedings of the International Cross-Disciplinary Conference on Web Accessibility (W4A)

  This paper from the University of Tunis presents a mobile web service for translating written text into sign language using a 3D virtual signing agent on Android devices. The system addresses two interrelated accessibility challenges: deaf and hard of hearing people with low…

  sign language · deaf accessibility · mobile accessibility · machine translation · signing avatar

• Alipi: Tools for a Re-Narration Web

  T. B. Dinesh, Venkatesh Choppella · 2012 · Proceedings of the International Cross-Disciplinary Conference on Web Accessibility (W4A)

  This companion demo paper to the full Alipi framework paper presents the concrete open-source toolset that implements the re-narration web concept. The authors frame the accessibility challenge around the "next billion" internet users — people who may not be literate in the…

  social accessibility · web accessibility · localization · multilingual accessibility · collaborative accessibility

• Universal and Ubiquitous Web Access with Capti

  Yevgen Borodin, Andrii Sovyak, Alexander Dimitriyadi, Yury Puzis, Valentyn Melnyk, Faisal Ahmed, Glenn Dausch, I. V. Ramakrishnan · 2012 · Proceedings of the International Cross-Disciplinary Conference on Web Accessibility (W4A)

  This demo paper presents Capti, a cross-platform web browsing application designed to make web access more usable for both blind and sighted users. Capti addresses two interconnected problems: the inefficiency of traditional screen readers for finding and consuming web content,…

  screen readers · assistive technology · blind and low vision · text-to-speech · universal design

• Using Real-time Feedback to Improve Visual Question Answering

  Yu Zhong, Phyo Thiha, Grant He, Walter Lasecki, Jeffrey Bigham · 2012 · CHI EA '12: CHI '12 Extended Abstracts on Human Factors in Computing Systems

  This work-in-progress paper introduces Legion:View, a system that extends the VizWiz model of crowd-powered visual question answering by adding a real-time feedback loop between blind users and crowd workers. The original VizWiz allowed blind users to take a still photograph,…

  visual question answering · crowdsourcing · blind users · real-time systems · assistive technology

• Breath Mobile: A Software-Based Hands-Free and Voice-Free Breathing Controlled Mobile Phone Interface

  Jackson Feijó Filho, Thiago Valle, Wilson Prata · 2012 · Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This short paper proposes Breath Mobile, a software-only breathing interface for mobile phones that uses the device's built-in microphone to detect puffing patterns and translate them into navigation and selection events. Unlike traditional sip-and-puff controllers that require…

  motor impairment · breath control · sip-and-puff · mobile accessibility · alternative input

• Designing for Individuals: Usable Touch-Screen Interaction through Shared User Models

  Kyle Montague, Vicki L. Hanson, Andy Cobley · 2012 · Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper introduces the Shared User Modelling (SUM) Framework, a system that collects touch interaction data during normal application use to build a user model that can be shared across multiple applications and devices via web services. Unlike traditional accessibility…

  touch screen accessibility · adaptive interface · user model · mobile accessibility · visual impairment

• Elderly Text-Entry Performance on Touchscreens

  Hugo Nicolau, Joaquim Jorge · 2012 · Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '12)

  This paper presents an empirical study of how elderly users perform text-entry tasks on touchscreen devices, examining both mobile phones and tablets. Fifteen participants aged 67 to 89 (mean 79) were asked to copy sentences on an HTC Desire smartphone and an ASUS Transformer…

  touchscreen accessibility · text entry · aging · motor accessibility · tremor

• Tapulator: A Non-Visual Calculator Using Natural Prefix-Free Codes

  Vaspol Ruamviboonsuk, Shiri Azenkot, Richard E. Ladner · 2012 · Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2012)

  This demonstration paper presents the Tapulator, a non-visual calculator for smartphones that replaces traditional on-screen buttons with a simple gesture-based numeric entry system using multi-finger taps and swipes. The core innovation is a natural prefix-free code for…

  blindness · low vision · touchscreen accessibility · screen reader · gesture input

• Application of Content Adaptation in Web Accessibility for the Blind

  Pauli P. Y. Lai · 2011 · Proceedings of the International Cross-Disciplinary Conference on Web Accessibility (W4A)

  This paper proposes transforming web pages into hierarchical, numbered menu structures — modeled on Interactive Voice Response Systems (IVRS) — so blind users can navigate content by pressing number keys rather than listening sequentially through entire pages. The author…

  blind and low vision · content adaptation · screen readers · mobile accessibility · web page segmentation

• Crosschecking the Mobile Web for People with Visual Impairments

  Luís Carriço, Rui Lopes, Rogério Bandeira · 2011 · Proceedings of the International Cross-Disciplinary Conference on Web Accessibility (W4A)

  This paper proposes a framework for evaluating mobile web accessibility for specific disability profiles by coherently merging three sets of guidelines: WCAG (web accessibility), W3C Mobile Web Best Practices (MWBP), and disability classifications from the ICF. The authors argue…

  mobile accessibility · blind and low vision · WCAG compliance · accessibility evaluation · web standards

• Spindex (Speech Index) Improves Auditory Menu Acceptance and Navigation Performance

  Myounghoon Jeon, Bruce N. Walker · 2011 · ACM Transactions on Accessible Computing

  This paper introduces the "spindex" (speech index), a novel auditory cue designed to improve navigation through spoken menus on mobile devices. The spindex works by pronouncing the first letter of each menu item before the full text-to-speech (TTS) rendering—analogous to the…

  auditory interfaces · mobile accessibility · text-to-speech · screen readers · user interface design

• Supporting Blind Photography

  Chandrika Jayant, Hanjie Ji, Samuel White, Jeffrey P. Bigham · 2011 · ASSETS '11: The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility

  This paper explores how blind and low-vision people use cameras and presents two applications designed to make photography more accessible. The research begins with a large-scale online survey of 118 blind and low-vision people that establishes the empirical foundation for the…

  blind users · low vision · photography · computer vision · mobile accessibility

• Exploring Iconographic Interface in Emergency for Deaf

  Tânia Pereira, Benjamim Fonseca, Hugo Paredes, Miriam Cabo · 2011 · Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2011)

  This demonstration paper presents a mobile phone application that enables deaf people to communicate with emergency medical services using an iconographic touchscreen interface rather than voice calls. In Portugal at the time of publication, deaf people could only access…

  deaf · emergency services · iconographic interface · mobile accessibility · pictographic communication

• An Integrated System for Blind Day-to-Day Life Autonomy

  Hugo Fernandes, José Faria, Hugo Paredes, João Barroso · 2011 · Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2011)

  This demonstration paper presents nav4b, an integrated system designed to support the day-to-day autonomy of blind people by combining indoor/outdoor navigation guidance with object recognition in a single platform. Unlike existing solutions that require users to carry multiple…

  blindness · navigation · RFID · object recognition · white cane

• Evaluating Quality and Comprehension of Real-Time Sign Language Video on Mobile Phones

  Jessica J. Tran, Joy Kim, Jaehong Chon, Eve A. Riskin, Richard E. Ladner, Jacob O. Wobbrock · 2011 · Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2011)

  This paper investigates the relationship between objective video quality metrics (PSNR — peak signal-to-noise ratio), subjective quality preferences, and actual comprehension of American Sign Language (ASL) video transmitted at very low bitrates on mobile phones. At the time of…

  deaf · American Sign Language · video compression · mobile accessibility · video quality

• StopFinder: Improving the Experience of Blind Public Transit Riders with Crowdsourcing

  Sanjana Prasain · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This doctoral consortium paper presents StopFinder, a mobile system that uses crowdsourcing to collect and provide information about non-visual landmarks around bus stops for blind public transit riders. The research addresses a fundamental challenge: while people who are blind…

  blindness and low vision · crowdsourcing · navigation · public transportation · mobile accessibility

• Analyzing Visual Questions from Visually Impaired Users

  Erin L. Brady · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This doctoral consortium paper presents an analysis of the types of visual questions that visually impaired users ask through VizWiz, a mobile phone application that provides near-realtime answers to visual questions. VizWiz allows users to take a photo with their phone, speak a…

  blindness and low vision · crowdsourcing · computer vision · mobile accessibility · visual question answering

• TypeInBraille: A Braille-Based Typing Application for Touchscreen Devices

  Sergio Mascetti, Cristian Bernareggi, Matteo Belotti · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This demonstration paper presents TypeInBraille, a novel text entry application for touchscreen smartphones that allows blind users to type using Braille code rather than the standard on-screen QWERTY keyboard. While screen readers like VoiceOver have made smartphones broadly…

  blindness and low vision · braille · text entry · touchscreen accessibility · mobile accessibility