An innovative eye-tracker. Main features and demonstrative tests
Lorenzo Bellizzi, Giuseppe Bevilacqua, Valerio Biancalana, Mario, Carucci, Roberto Cecchi, Piero Chessa, Aniello Donniacuo, Marco Mandal\`a,, Leonardo Stiaccini

TL;DR
This paper introduces an innovative, low-cost eye-tracker utilizing magnetic dipole localization with magnetoresistive sensors, demonstrating high-speed, real-time tracking of head and eye movements with advantages over existing methods.
Contribution
The paper presents a novel eye-tracking system based on magnetic dipole localization, highlighting its high speed, robustness, low cost, and reduced invasivity compared to traditional technologies.
Findings
High tracking rate of 100-200 Sa/s in real time
Comparable or improved precision over existing methods
Lower invasivity and cost than traditional eye-tracking systems
Abstract
We present a set of results obtained with an innovative eye-tracker based on magnetic dipole localization by means of an array of magnetoresistive sensors. The system tracks both head and eye movements with a high rate (100-200 Sa/s) and in real time. A simple setup is arranged to simulate head and eye motions and to test the tracker performance under realistic conditions. Multimedia material is provided to substantiate and exemplify the results. A comparison with other available technologies for eye tracking is drawn, discussing advantages (e.g. precision) and disadvantages (e.g. invasivity) of the diverse approaches, the presented method standing out for low cost, robustness and relatively low invasivity.
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