Earlier this year an ITU student, Maria Barret finalized her thesis titled: "Hi-hi eye control with a lo-fi eye tracker".
Maria compared the typing performance of an early version of the ITU gaze tracker on the two typing systems: GazeTalk and StarGazer. The thesis is written in Danish and is available here.
Based on the work from her thesis Maria got a paper for the upcoming COGAIN conference accepted.
Barrett, M., Skovsgaard, H., and San Agustin, J. 2009. Performance Evaluation of a Low-Cost Gaze Tracker for Eye Typing. In proceedings of The 5th Conference on Communication by Gaze Interaction – COGAIN 2009