TrackStick

It is important that eye-tracking studies report the accuracy and precision of the eye tracker. It is argued that the values provided by the manufacturers are representative of the best possible capability of the eye tracker under ideal conditions and for participants with good tracking probabilities. A tool is introduced that will allow researchers to determine the actual data quality as it applies for individual participants at the time of data capturing. Results of a study where the tool was implemented is discussed and compared with the accuracy and precision values as reported by the manufacturer for the same model of eye-tracker.