Literature Reviews
Reviewed research papers, articles, and publications relevant to digital accessibility.
42 results found tagged touchscreen accessibility.
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Modeling Touch Input for Users with Motor Impairments: Empirical Insights into Training Size Requirements
This CHI Extended Abstract addresses a practical question for ability-based design: how many touch observations do you actually need before you can build a user-specific model of someone's touch performance? Most touch modeling work, including Bayesi…
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Barrier pointing: using physical edges to assist target acquisition on mobile device touch screens
Froehlich, Wobbrock and Kane propose barrier pointing: a set of stylus-based target acquisition techniques that exploit the raised physical edge of a mobile touch screen to stabilise input for users with motor impairments. Standard touch-screen tappi…
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Hover or Tap? Supporting Pen-based Menu Navigation for Older Adults
This paper investigates "drifting" — an error specific to pen-based (Tablet PC) interaction where users accidentally hover over an adjacent menu head, causing their intended menu to close and the wrong one to open. This occurs because inductive pen t…
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Blind People and Mobile Touch-based Text-Entry: Acknowledging the Need for Different Flavors
This paper investigates how individual differences among blind people affect their performance with different touchscreen text-entry methods. Thirteen blind participants (ages 24-62) were evaluated using four methods on a Samsung Galaxy S: QWERTY (st…
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TypeInBraille: A Braille-Based Typing Application for Touchscreen Devices
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 hav…
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Tapulator: A Non-Visual Calculator Using Natural Prefix-Free Codes
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…
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Elderly Text-Entry Performance on Touchscreens
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 smartpho…
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Touchplates: Low-Cost Tactile Overlays for Visually Impaired Touch Screen Users
This paper introduces touchplates — inexpensive, unpowered, customizable tactile overlays that can be placed on touch screens to provide physical guides and tactile feedback for blind and visually impaired users. Unlike prior approaches that either o…
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Follow That Sound: Using Sonification and Corrective Verbal Feedback to Teach Touchscreen Gestures
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 v…
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RegionSpeak: Quick Comprehensive Spatial Descriptions of Complex Images for Blind Users
This paper introduces RegionSpeak, a mobile application that helps blind users get comprehensive spatial descriptions of complex visual scenes by combining image stitching with parallelized crowdsourced labeling. The authors identify a gap in existin…