Abstract
People who are blind or visually impaired exhibit different interaction and access needs on mobile touchscreen devices. This is rooted in the reliance on non-visual access for using electronic devices. In comparison to regular computers, non-visual access to mobile touchscreen devices poses more challenges for reasons related to the lack of physical buttons, the limited size of touchscreens, and the reliance on gesture-based interaction. This paper aims at shedding light on the persistent accessibility-related problems that users who are blind or visually impaired are likely to encounter while interacting with mobile touchscreen devices, and whether or not these problems are sufficiently covered in the recent release of Web Content Accessibility Guidelines (WCAG 2.1). The study presented in this paper involved a total of 16 participants with visual impairment cases ranging from moderate vision loss to legal blindness. The results revealed a multitude of critical accessibility problems that are still being overlooked while developing mobile Apps and websites. After compiling all problems, a total of 34 major problems were identified. These problems were then classified into categories with identified nature, severity, and affected demographic. While many of these problems are mapped to existing accessibility guidelines delivered in WCAG 2.1, some problems either lack relevant success criteria in WCAG 2.1 or have insufficient conformance levels in WCAG 2.1. The paper concludes that despite the existence of different mobile-oriented guidelines in WCAG 2.1, there is still an obvious lack of adherence to these guidelines in mainstream mobile content. Moreover, the findings suggest there is room for improvement in WCAG 2.1 to cover more of the problems that users who are blind or visually impaired encounter on mobile touchscreen devices.
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16 March 2021
A Correction to this paper has been published: https://doi.org/10.1007/s10209-021-00798-z
References
Griffin-Shirley, N., Banda, D.R., Ajuwon, P.M., Cheon, J., Lee, J., Park, H.R., Lyngdoh, S.N.: A survey on the use of mobile applications for people who are visually impaired. J. Vis. Impairment Blindness 111(4), 307–323 (2017)
Watanabe, T., Yamaguchi, T., Minatani, K.: Advantages and drawbacks of smartphones and tablets for visually impaired people—analysis of ICT user survey results. IEICE Trans. Inf. Syst. 98(4), 922–929 (2015)
Quoracreative. (2020). 101 Mobile Marketing Statistics And Trends For 2020. https://quoracreative.com/article/mobile-marketing-statistics
Statista. (2020). Mobile percentage of website traffic 2020. https://www.statista.com/statistics/277125/share-of-website-traffic-coming-from-mobile-devices/
Hakobyan, L., Lumsden, J., O’Sullivan, D., Bartlett, H.: Mobile assistive technologies for the visually impaired. Surv. Ophthalmol. 58(6), 513–528 (2013)
Akkara, J.D., Kuriakose, A.: Smartphone apps for visually impaired persons. Kerala J. Ophthalmol. 31(3), 242 (2019)
United Nations Department of Economic and Social Affairs Disability. (2006). The UN Convention on the rights of persons with Disabilities. UN. https://www.un.org/development/desa/disabilities/convention-on-the-rights-of-persons-with-disabilities/convention-on-the-rights-of-persons-with-disabilities-2.html
Takagi, H., Asakawa, C.: New challenges in web accessibility. Univ. Access Inf. Soc. 16(1), 1–2 (2017)
The World Wide Web Consortium (W3C). (2019). Introduction to Web Accessibility, Web Accessibility Initiative (WAI). W3C. https://www.w3.org/WAI/fundamentals/accessibility-intro/
The World Wide Web Consortium (W3C). (2019). Mobile Accessibility at W3C. W3C. https://www.w3.org/WAI/standards-guidelines/mobile/
United Nations (UN). (2006). Article 9- Accessibility, United Nations Enable. UN. https://www.un.org/development/desa/disabilities/convention-on-the-rights-of-persons-with-disabilities/article-9-accessibility.html
Section 508 of the Rehabilitation Act (1998). 29 U.S.C. § 794d
European Commission (EC). (2016). Directive (EU) 2016/2102 of the European Parliament and of the Council of 26 October 2016 on the Accessibility of Public Sector Websites and Mobile Applications of Public Sector Bodies. EC. https://data.europa.eu/eli/dir/2016/2102/oj
Ballantyne, M., Jha, A., Jacobsen, A., Hawker, J. S., El-Glaly, Y. N. (2018). Study of accessibility guidelines of mobile applications. In: Proceedings of the 17th International Conference on Mobile and Ubiquitous Multimedia (pp. 305–315).
Mi, N., Cavuoto, L.A., Benson, K., Smith-Jackson, T., Nussbaum, M.A.: A heuristic checklist for an accessible smartphone interface design. Univ. Access Inf. Soc. 13(4), 351–365 (2014)
Kane, S. K., Wobbrock, J. O., Ladner, R. E. (2011). Usable gestures for blind people: understanding preference and performance. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (pp. 413–422).
The World Wide Web Consortium (W3C). (2018). Web Content Accessibility Guidelines (WCAG) 2.1. W3C. https://www.w3.org/TR/WCAG21/
Apple. (2020). Accessibility - Apple Developer. https://developer.apple.com/accessibility/
Google. (2020). Accessibility - Material Design. https://material.io/design/usability/accessibility.html#understanding-accessibility
World Health Organization (WHO). (2019). World report on vision. WHO. https://www.who.int/publications/i/item/world-report-on-vision
Irvine, D., Zemke, A., Pusateri, G., Gerlach, L., Chun, R., Jay, W.M.: Tablet and smartphone accessibility features in the low vision rehabilitation. Neuro-ophthalmology 38(2), 53–59 (2014)
Martiniello, N., Eisenbarth, W., Lehane, C., Johnson, A., Wittich, W. (2019). Exploring the use of smartphones and tablets among people with visual impairments: Are mainstream devices replacing the use of traditional visual aids?. Assistive Technol., pp. 1–12.
Sarsenbayeva, Z. (2018). Situational Impairments during Mobile Interaction. In: Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (pp. 498–503).
The World Wide Web Consortium (W3C). (2020). World Wide Web Consortium (W3C). W3C. https://www.w3.org/
Abou-Zahra, S., Brewer, J., Henry, S. L. (2013). Essential components of mobile web accessibility. In: Proceedings of the 10th International Cross-Disciplinary Conference on Web Accessibility (pp. 1–4).
Billi, M., Burzagli, L., Catarci, T., Santucci, G., Bertini, E., Gabbanini, F., Palchetti, E.: A unified methodology for the evaluation of accessibility and usability of mobile applications. Univ. Access Inf. Soc. 9(4), 337–356 (2010)
Lopes, R., Bandeira, R., Carriço, L., Van Isacker, K. (2010). Towards mobile web accessibility: vision and challenges. In: Proceedings of the first International ÆGIS Conference (pp. 151–158).
Clegg-Vinell, R., Bailey, C., Gkatzidou, V. (2014). Investigating the appropriateness and relevance of mobile web accessibility guidelines. In: Proceedings of the 11th Web for All Conference (pp. 1–4).
Patch, K., Spellman, J., & Wahlbin, K. (2015). Mobile accessibility: How WCAG 2.0 and other W3C/WAI guidelines apply to mobile. W3C First Public Working Draft, 26.
Power, C., Freire, A., Petrie, H., Swallow, D. (2012). Guidelines are only half of the story: accessibility problems encountered by blind users on the web. In: Proceedings of the SIGCHI conference on human factors in computing systems (pp. 433–442).
Carvalho, M. C. N., Dias, F. S., Reis, A. G. S., Freire, A. P. (2018). Accessibility and usability problems encountered on websites and applications in mobile devices by blind and normal-vision users. In: Proceedings of the 33rd Annual ACM symposium on applied computing (pp. 2022–2029).
World Wide Web Consortium. (2009). Mobile Web Initiative. W3C. https://www.w3.org/Mobile/
Rabin, J., McCathieNevile, C. (2008). Mobile web best practices 1.0 basic guidelines. W3C Recommendation 29 July 2008.
The British Broadcasting Corporation (BBC). (2019). Mobile Accessibility Guidelines - Accessibility For Products. BBC. https://www.bbc.co.uk/accessibility/forproducts/guides/mobile/
Silva, C., Eler, M. M., Fraser, G. (2018). A survey on the tool support for the automatic evaluation of mobile accessibility. In Proceedings of the 8th International Conference on Software Development and Technologies for Enhancing Accessibility and Fighting Info-exclusion (pp. 286–293).
Damaceno, R.J.P., Braga, J.C., Mena-Chalco, J.P.: Mobile device accessibility for the visually impaired: problems mapping and recommendations. Univ. Access Inf. Soc. 17(2), 421–435 (2018)
Smaradottir, B., Håland, J., Martinez, S.: Accessibility of mobile devices for visually impaired users: an evaluation of the screen-reader VoiceOver. Stud. Health Technol. Inf. 245, 1381 (2017)
Luthra, V., Ghosh, S. (2015). Understanding, evaluating and analyzing touch screen gestures for visually impaired users in mobile environment. In: International Conference on Universal Access in Human-Computer Interaction (pp. 25–36). Springer, Cham.
Buzzi, M.C., Buzzi, M., Leporini, B., Trujillo, A.: Analyzing visually impaired people’s touch gestures on smartphones. Multimedia Tools Appl. 76(4), 5141–5169 (2017)
Serra, L.C., Carvalho, L.P., Ferreira, L.P., Vaz, J.B.S., Freire, A.P.: Accessibility evaluation of e-government mobile applications in Brazil. Proc. Comp. Sci. 67, 348–357 (2015)
Ghidini, E., Almeida, W. D., Manssour, I. H., & Silveira, M. S. (2016, January). Developing apps for visually impaired people: Lessons learned from practice. In: 2016 49th Hawaii International Conference on System Sciences (HICSS) (pp. 5691–5700). IEEE, New York
AppleVis. (2010). AppleVis. https://www.applevis.com/
TeamViewer. (2005). TeamViewer - The Remote Connectivity Software. http://www.teamviewer.com/en/
Van Someren, M.W., Barnard, Y.F., Sandberg, J.A.C.: The think aloud method: a practical approach to modelling cognitive. AcademicPress, London (1994)
Jadán-Guerrero, J., Guevara, C., Sanchez-Gordon, S., Calle-Jimenez, T., Lara-Alvarez, P., Medina, A., Nunes, I. L. (2019). Accessibility Assessment in Mobile Applications for Android. In: Advances in Human Factors and Systems Interaction: Proceedings of the AHFE 2019 International Conference on Human Factors and Systems Interaction, July 24–28, 2019, Washington DC, USA (Vol. 959, p. 279). Springer, Cham.
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Appendix A: The tasks participants were required to perform during testing sessions
Appendix A: The tasks participants were required to perform during testing sessions
The software used in the study combined two mobile Apps and two websites. The mobile Apps used in the study are: (1) Telegram App (i.e., a communication App) and (2) Macy’s App (i.e., online shopping App) in both iOS and Android. The websites used are: www.accuweather.com (i.e., an international weather forecasting website) and www.discogs.com (i.e., the largest online music database in the world). Table 6 below shows the tasks, required from each participant, corresponding each of the aforementioned Apps and websites.
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Alajarmeh, N. The extent of mobile accessibility coverage in WCAG 2.1: sufficiency of success criteria and appropriateness of relevant conformance levels pertaining to accessibility problems encountered by users who are visually impaired. Univ Access Inf Soc 21, 507–532 (2022). https://doi.org/10.1007/s10209-020-00785-w
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DOI: https://doi.org/10.1007/s10209-020-00785-w