Device and a computer-implemented method for determining a behavior of a target user

A device for determining a behavior of a target user, comprising:

• a sensing unit configured to face at least one eye area of a target user, the sensing unit being configured to acquire a plurality of target signals representative of a variation of at least one characteristic of said at least one eye area of said target user,
• the sensing unit comprising at least one sensor, the at least one sensor being a non-imaging sensor, and
• the at least one sensor being oriented towards said at least one eye area;
• a light stimuli source configured to stimulate at least one eye, said behavior being a change in visual comfort of the target user, said variation of said at least one characteristic being caused by a light stimulus provided to said at least one eye area, and said change in the visual comfort of the target user being glare;
• and
• a controller configured to:
• provide a machine learning algorithm,
• stimulate at least one eye with said light stimuli source,
• provide a plurality of objective target data related to the acquired target signals as an input to said machine learning algorithm,
• determine a behavior of said target user as an output of the machine learning algorithm, and
• determine at least one filter for a transparent support to improve or to maintain the visual comfort and/or visual performance of said target user based on said behavior.