Hi @mahestynasser, I am afraid that measuring the pupil size is a metric that is reserved for the Tobii Pro range of eye tracker only. So unfortunately, you cannot expose this variable with the Tobii C4 Tracker. My apologies for any inconvenience.
Hi @mahestynasser, I am afraid that measuring the pupil size is a metric that is reserved for the Tobii Pro range of eye tracker only. So unfortunately, you cannot expose this variable with the Tobii C4 Tracker. My apologies for any inconvenience.