Leah Perlmutter
Jacob O. Wobbrock
Richard E. Ladner
ABSTRACT
Keypad-based character input in existing digital calculator applications on touch screen devices requires precise, targeted key presses that are time-consuming and error-prone for many screen reader users. We demonstrate GestureCalc, a digital calculator that uses target-free gestures for arithmetic tasks. It allows eyes-free target-less input of digits and operations through taps and directional swipes with one to three fingers, guided by minimal audio feedback. A study of the effectiveness of GestureCalc for screen reader users appears in a full paper by the authors at this conference.
- Mrim Alnfiai and Srinivas Sampalli. 2017. BrailleTap: Developing a Calculator Based on Braille Using Tap Gestures. In Universal Access in Human--Computer Interaction. Designing Novel Interactions. Springer International Publishing, Cham, 213--223. DOI: http://dx.doi.org/10.1007/978--3--319--58703--5_16Google Scholar
- Shiri Azenkot, Cynthia L. Bennett, and Richard E. Ladner. 2013. DigiTaps: Eyes-free Number Entry on Touchscreens with Minimal Audio Feedback. In Proceedings of the 26th Annual ACM Symposium on User Interface Software and Technology (UIST '13). 85--90. DOI:http://dx.doi.org/10.1145/2501988.2502056Google ScholarDigital Library
- Bindita Chaudhuri, Leah Perlmutter, Justin Petelka, Philip Garrison, James Fogarty, Jacob O. Wobbrock, and Richard E. Ladner. 2019. GestureCalc: An Eyes-Free Calculator for Touch Screens. In Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '19). To Appear (preprint: https://bit.ly/30cWxSh).Google Scholar
- Shaun K. Kane, Jacob O. Wobbrock, and Richard E. Ladner. 2011. Usable Gestures for Blind People: Understanding Preference and Performance. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '11). 413--422. DOI: http://dx.doi.org/10.1145/1978942.1979001Google ScholarDigital Library
- George Lakoff and Mark Johnson. 1980. The Metaphorical Structure of the Human Conceptual System. Cognitive science 4, 2 (1980), 195--208. DOI: http://dx.doi.org/10.1207/s15516709cog0402_4Google Scholar
- Vaspol Ruamviboonsuk, Shiri Azenkot, and Richard E. Ladner. 2012. Tapulator: A Non-visual Calculator Using Natural Prefix-free Codes. In Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '12). 221--222. DOI:http://dx.doi.org/10.1145/2384916.2384963Google ScholarDigital Library
- Wikipedia. 2018. Braille. https://en.wikipedia.org/wiki/Braille. (2018).Google Scholar
Index Terms
- Demonstration of GestureCalc: An Eyes-Free Calculator for Touch Screens
Recommendations
GestureCalc: An Eyes-Free Calculator for Touch Screens
ASSETS '19: Proceedings of the 21st International ACM SIGACCESS Conference on Computers and AccessibilityA digital calculator is one of the most frequently used touch screen applications. However, keypad-based character input in existing calculator applications requires precise, targeted key presses that are time-consuming and error-prone for many screen ...
Forcetap: extending the input vocabulary of mobile touch screens by adding tap gestures
MobileHCI '11: Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and ServicesWe introduce an interaction technique that increases the touch screen input vocabulary by distinguishing a strong tap from a gentle tap without the use of additional hardware. We have designed and validated an algorithm that detects different types of ...
B2B-Swipe: Swipe Gesture for Rectangular Smartwatches from a Bezel to a Bezel
CHI '16: Proceedings of the 2016 CHI Conference on Human Factors in Computing SystemsWe present B2B-Swipe, a single-finger swipe gesture for a rectangular smartwatch that starts at a bezel and ends at a bezel to enrich input vocabulary. There are 16 possible B2B-Swipes because a rectangular smartwatch has four bezels. Moreover, B2B-...
Comments