  Using Low Cost Portable Eye Tracking for Biometric Identification Or
Verification: Eye tracking technologies have in recent years become available
outside of specialised labs, and are starting to become integrated in tablets
and virtual reality headsets. This offers new opportunities for use in common
office- and home environments, such as for biometric recognition
(identification or verification), alone or in combination with other
technologies. This paper exposes two fundamentally different approaches that
have been suggested, based on spatial and temporal signatures respectively.
While deploying different stimulation paradigms for recording, it also proposes
an alternative way to analyze spatial domain signatures using Fourier
transformation. Empirical data recorded from two subjects over two weeks, three
months apart, are found to support previous results. Further, variations and
stability of some of the proposed signatures are analyzed over the extended
timeframe and under slightly varying conditions.
