Title
Understanding One-Handed Thumb Interaction with a Mobile Touchscreen Device: Effects of Keyboard Size, Gap and Button Shape
Abstract
Small, mobile touchscreen devices have increasingly permeated into our daily life over the last decade. However, interface design factors that are likely to influence input performance of the devices have not yet been fully investigated. The purpose of the current study was to explore the effects of keyboard size, gap and button shape on usability metrics in thumb interaction with a small, mobile touchscreen device. Twenty-eight volunteers attended a lab-based experiment where they were required to complete a series of letter input tasks with a touchscreen smartphone. The results indicated that keyboard size yielded significant effects on both accuracy rate and task completion time, and button shape and gap exerted significant influence on task completion time only. Interaction effects were observed between keyboard size and button shape on both accuracy rate and task completion time. Keyboard design factors that exerted optimal input performance were mostly preferred by users. Our findings have important implications and can help with the design of usable touchscreen interface, especially for small, mobile touchscreen devices.
Year
DOI
Venue
2019
10.1007/978-3-030-19135-1_40
ADVANCES IN USABILITY AND USER EXPERIENCE
Keywords
DocType
Volume
Touchscreen,Keyboard size,Gap,Button shape,Usability
Conference
972
ISSN
Citations 
PageRank 
2194-5357
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Da Tao100.34
Tieyan Wang200.34
Haibo Tan300.34
Jian Cai400.34
Xu Zhang523333.89