Paper Info
Title
TnToolkit: a design and analysis tool for ambiguous, QWERTY, and on-screen keypads
Abstract
The pervasive use of ambiguous keypads for mobile text entry necessitates examination of their performance characteristics. This paper presents TnToolkit--a self contained tool to calculate performance measurements for ambiguous keypads. While TnToolkit's focus is ambiguous keypads, it also works with QWERTY and on screen keypads. By default, TnToolkit predicts words per minute performance based on a traditional Fitts' law model, and calculates KSPC, the average keystrokes required to enter each character of text. Existing modules are extensible to implement custom metrics. An experiment reveals that using TnToolkit to gather performance metrics is 69% faster than existing techniques, without compromising accuracy.
Year
DOI
Venue
2009
10.1145/1570433.1570444
EICS
Keywords
Field
DocType
average keystrokes,on-screen keypads,analysis tool,mobile text entry necessitates,custom metrics,performance measurement,screen keypads,performance characteristic,minute performance,ambiguous keypads,law model,performance metrics,design,performance,measurement
Words per minute,Computer science,Performance measurement,Human–computer interaction,Text entry
Conference
Citations 
PageRank 
References 
0
0.34
10
Authors
2
Name
Order
Citations
PageRank
Steven J. Castellucci115310.45
I. Scott MacKenzie24789729.33