> It maps facial features to assign each pupil’s emotional state into a category such as happiness, sadness, anger, disgust, surprise and fear.

Is boredom an emotional state? It's probably worth including, considering the setting.

Coworkers that I've worked with for years will still occasionally ask me if I'm stressed or angry. Apparently that's what I look like in deep concentrating, even if I'm totally relaxed and otherwise happy. If a mild case of RBF can throw humans off how easy would it be for an AI to miss-judge?

Which raises the question, why is anyone even considering AI to judge emotional state? For what purpose?