Change search
ReferencesLink to record
Permanent link

Direct link
An Evaluation of BrailleTouch: Mobile Touchscreen Text Entry for the Visually Impaired
Show others and affiliations
2012 (English)In: Proceedings of the 14th International Conference on Human-computer Interaction with Mobile Devices and Services, Association for Computing Machinery (ACM), 2012, 317-326 p.Conference paper (Refereed)Text
Abstract [en]

We present the evaluation of BrailleTouch, an accessible keyboard for blind users on touchscreen smartphones. Based on the standard Perkins Brailler, BrailleTouch implements a six-key chorded braille soft keyboard. Eleven blind participants typed for 165 twenty-minute sessions on three mobile devices: 1) BrailleTouch on a smartphone; 2) a soft braille keyboard on a touchscreen tablet; and 3) a commercial braille keyboard with physical keys. Expert blind users averaged 23.2 words per minute (wpm) on the BrailleTouch smartphone. The fastest participant, a touchscreen novice, achieved 32.1 wpm during his first session. Overall, participants were able to transfer their existing braille typing skills to a touchscreen device within an hour of practice. We report the speed for braille text entry on three mobile devices, an in depth error analysis, and the lessons learned for the design and evaluation of accessible and eyes-free soft keyboards.

Place, publisher, year, edition, pages
Association for Computing Machinery (ACM), 2012. 317-326 p.
, MobileHCI ’12
Keyword [en]
accessibility, blindness, chording, gestures, mobile devices, multi-touch interaction, text entry, touchscreens
National Category
Computer Science Human Computer Interaction Media and Communication Technology
Research subject
Computer Science; Human-computer Interaction
URN: urn:nbn:se:kth:diva-184703DOI: 10.1145/2371574.2371623OAI: diva2:916504
International Conference on Human-computer Interaction with Mobile Devices and Services

QC 20160418

Available from: 2016-04-03 Created: 2016-04-03 Last updated: 2016-04-20

Open Access in DiVA

fulltext(895 kB)34 downloads
File information
File name FULLTEXT01.pdfFile size 895 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textAn Evaluation of BrailleTouch

Search in DiVA

By author/editor
Romero, Mario
Computer ScienceHuman Computer InteractionMedia and Communication Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 34 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 31 hits
ReferencesLink to record
Permanent link

Direct link