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Publication details

Document type
Conference papers


Title
Effect of target size on non-visual text-entry

Participants in the publication
André Rodrigues (Author)
LASIGE
 Hugo Nicolau (Author)
Kyle Montague (Author)
Luís Carriço (Author)
Dep. Informática
 LASIGE
 Tiago Guerreiro (Author)
Dep. Informática
 LASIGE
Summary
Touch-enabled devices have a growing variety of screen sizes; however, there is little knowledge on the effect of key size on non-visual text-entry performance. We conducted a user study with 12 blind participants to investigate how non-visual input performance varies with four QWERTY keyboard sizes (ranging from 15mm to 2.5 mm). This paper presents an analysis of typing performance and touch behaviors discussing its implications for future research. Our findings show that there is an upper limit to the benefits of larger target sizes between 10mm and 15mm. Input speed decreases from 4.5 to 2.4 words per minute (WPM) for targets sizes below 10mm. The smallest size was deemed unusable by participants even though performance was in par with previous work.

Date of Publication
2016

Event
Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services - MobileHCI '16

Publication Identifiers
ISBN - 9781450344081

Address
Florence, Italy

Publisher
ACM Press

Number of pages
6
Starting page
47
Last page
52

Document Identifiers
URL - http://dx.doi.org/10.1145/2935334.2935376
DOI - https://doi.org/10.1145/2935334.2935376

Awards
Honourable mention

Rankings
Google Metrics (2019) - 28
CORE B (2014-17) -
Google Metrics (2014) - 30


Export

APA
André Rodrigues, Hugo Nicolau, Kyle Montague, Luís Carriço, Tiago Guerreiro, (2016). Effect of target size on non-visual text-entry. Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services - MobileHCI '16, 47-52

IEEE
André Rodrigues, Hugo Nicolau, Kyle Montague, Luís Carriço, Tiago Guerreiro, "Effect of target size on non-visual text-entry" in Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services - MobileHCI '16, Florence, Italy, 2016, pp. 47-52, doi: 10.1145/2935334.2935376

BIBTEX
@InProceedings{35838, author = {André Rodrigues and Hugo Nicolau and Kyle Montague and Luís Carriço and Tiago Guerreiro}, title = {Effect of target size on non-visual text-entry}, booktitle = {Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services - MobileHCI '16}, year = 2016, pages = {47-52}, address = {Florence, Italy}, publisher = {ACM Press} }