Paper Info
Title
SAK: Scanning ambiguous keyboard for efficient one-key text entry
Abstract
The design and evaluation of a scanning ambiguous keyboard (SAK) is presented. SAK combines the most demanding requirement of a scanning keyboard—input using one key or switch—with the most appealing feature of an ambiguous keyboard—one key press per letter. The optimal design requires just 1.713 scan steps per character for English text entry. In a provisional evaluation, 12 able-bodied participants each entered 5 blocks of text with the scanning interval decreasing from 1100 ms initially to 700 ms at the end. The average text entry rate in the 5th block was 5.11 wpm with 99% accuracy. One participant performed an additional five blocks of trials and reached an average speed of 9.28 wpm on the 10th block. Afterwards, the usefulness of the approach for persons with severe physical disabilities was shown in a case study with a software implementation of the idea explicitly adapted for that target community.
Year
DOI
Venue
2010
10.1145/1806923.1806925
ACM Trans. Comput.-Hum. Interact.
Keywords
Field
DocType
key press,appealing feature,keyboards,intentional muscle contractions,english text entry,ambiguous keyboards,average text entry rate,mobile computing,ambiguous keyboard,text entry,provisional evaluation,case study,average speed,able-bodied participant,scanning keyboards,optimal design,efficient one-key text entry,assistive technologies,mobile computer
Mobile computing,Computer science,Optimal design,Speech recognition,Human–computer interaction,Software implementation,Text entry
Journal
Volume
Issue
ISSN
17
3
1073-0516
Citations 
PageRank 
References 
29
1.66
26
Authors
2
Name
Order
Citations
PageRank
I. Scott MacKenzie14789729.33
Torsten Felzer219326.35