NDLI: Access overlays: improving non-visual access to large touch screens for blind users (2011)

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Access overlays: improving non-visual access to large touch screens for blind users (2011)

Content Provider	CiteSeerX
Author	Kane, Shaun K. Morris, Meredith Ringel Perkins, Annuska Z. Wigdor, Daniel Ladner, Richard E. Wobbrock, Jacob O.
Description	Many touch screens remain inaccessible to blind users, and those approaches to providing access that do exist offer minimal support for interacting with large touch screens or spatial data. In this paper, we introduce a set of three software-based access overlays intended to improve the accessibility of large touch screen interfaces, specifically interactive tabletops. Our access overlays are called edge projection, neighborhood browsing, and touch-and-speak. In a user study, 14 blind users compared access overlays to an implementation of Apple’s VoiceOver screen reader. Our results show that two of our techniques were faster than VoiceOver, that participants correctly answered more questions about the screen’s layout using our techniques, and that participants overwhelmingly preferred our techniques. We developed several applications demonstrating the use of access overlays, including an accessible map kiosk and an accessible board game. Author Keywords Accessibility, touch screens, blindness, visual impairments.
File Format	PDF
Language	English
Publisher Date	2011-01-01
Publisher Institution	Proc. UIST 2011, ACM
Access Restriction	Open
Subject Keyword	Several Application Software-based Access Overlay Access Overlay Large Touch Screen Edge Projection Interactive Tabletop Spatial Data Visual Impairment Offer Minimal Support Touch Screen Neighborhood Browsing Large Touch Screen Interface Many Touch Screen Blind User Non-visual Access Accessible Map Kiosk User Study Voiceover Screen Reader Author Keywords Accessibility Accessible Board Game
Content Type	Text
Resource Type	Article

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