Usability Evaluation of Dwell-free Eye Typing Techniques

TL;DR

This paper evaluates four dwell-free eye typing techniques, demonstrating that the advanced method with controlled eye movement significantly improves usability and typing speed over other techniques.

Contribution

It provides a comparative usability analysis of four dwell-free eye typing methods, highlighting the superiority of the Adv-EyeK technique.

Findings

Adv-EyeK outperforms other techniques in usability.

Longitudinal study confirms sustained performance.

Participants preferred Adv-EyeK based on subjective evaluation.

Abstract

Dwelling is an essential task to be performed to select keys from an on-screen keyboard present in the eye typing interface. This selection task can be performed by fixing eye gaze on a key for a prolonged time. Spending sufficient amount of time on each key effectively decreases the overall eye typing rate. To address the problem, researchers proposed mechanisms, which diminish the dwell time. We conducted a within-subject usability evaluation of four dwell-free eye typing techniques. The results of first-time usability study, longitudinal study and subjective evaluation conducted with 15 participants confirm the superiority of controlled eye movement based advanced eye typing method (Adv-EyeK) than the other three techniques.