Istituto di Scienza e Tecnologie dell'Informazione     
Buzzi M. C., Buzzi M., Leporini B. Interacting with Mobile Devices Via Voiceover: Usability and Accessibility Issues. In: OzCHI'12 - 24th Australian Computer-Human Interaction Conference (Melbourne, VIC, Australia, 26-30 November 2012). Proceedings, pp. 339 - 348. ACM, 2012.
In this paper we analyze the interaction of blind users with Apple touchscreen devices iPad, iPhone and iPod touch, accessible to the visually-impaired thanks to their pre-installed VoiceOver screen reader or magnifier. Specifically, we focus on the gestures offered by VoiceOver to simplify interaction for blind users. A usability inspection of the devices? user interfaces has been performed and integrated with user feedback collected via an online survey taken by 55 totally blind users. Results confirm that VoiceOver makes the Apple devices basically accessible to blind users, but there are still some issues related to usability. Users normally believe that accessibility integrated with VoiceOver is an important innovation, but some operations, such as the writing of long text, take too long or are not comfortable. Results suggest that a multimodal approach on mobile touchscreen devices does not offer a simple and satisfactory interaction paradigm for all and it deserves further investigation. Three possible solutions for improving user interface interaction and offering a simpler and more comfortable experience for blind individuals were proposed to the survey participants, gathering their positive feedback.
URL: http://dl.acm.org/citation.cfm?id=2414591
DOI: 10.1145/2414536.2414591
Subject VoiceOver
Screen reader
Mobile accessibility
Blind users
K.4.2 Social Issues. Handicapped persons/special needs
H.5.2 User Interfaces

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