Mobile phones represent not only a means of communication, but an increasingly omnipresent computing platform, enabling diverse modes of communication including ambient displays t...
Working as a usability professional in the open source arena is a challenging task. The decentralized and engineering-driven approach of open source projects can be at odds with c...
This paper reports on an experiment comparing constrained and unconstrained movement in a 2D zooming environment. Results for a directed search task showed a significant decrease ...
The success of mobile text messaging poses many questions for usability studies. Considering the inherent usability weaknesses of mobile phones such as the small display, poor inp...
In video communication systems, gaze is an important topic and is widely being studied. Unlike other studies, displaying user's reflections on the video screen we stopped imi...