Holleis, P.; Otto, F.; Hußmann, H.; Schmidt, Albrecht:

Keystroke-Level Model for Advanced Mobile Phone Interaction.

In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (San Jose, California, USA, April 28 - May 03, 2007). CHI '07.
San Jose, California, USA: ACM Press, New York (2007), S. 1505-1514
Buchaufsatz / Kapitel / Fach: Informatik; Wirtschaftswissenschaften
The design of applications using mobile devices needs a
different quality assessment than those known for desktop
applications. Of the many aspects that have to be taken into
account, one important criterion is the average time users
need to complete a task. For interactions with the mouse,
keyboard or touch screens, there exist models that predict
interaction times like Fitts’ law or the Keystroke-Level
Model (KLM). This paper shows parallels to these models
for advanced interactions with mobile phones targeted at
pervasive services, including near field communication as
well as built-in cameras and sensors. Applications can be
evaluated with respect to user performance time without
having a prototype running on the phone. To accomplish
that, we extend the known KLM by identifying basic
interaction elements for mobile phones and give estimates
for expert user performance derived from several user tests.

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