Privacy Automated Anonymisation Understanding students’ and teachers’ verbal and non-verbal behaviours during instruction may help infer valuable information regarding the quality of teaching. Differential privacy New generation head-mounted displays, such as VR and AR glasses, are coming into the market with already integrated eye tracking and are expected to enable novel ways of human-computer interaction in numerous applications. Gaze Estimation Eye tracking is handled as one of the key technologies for applications that assess and evaluate human attention, behavior, and biometrics, especially using gaze, pupillary, and blink behaviors. RL for privacy preservation In this paper, we present an approach based on reinforcement learning for eye tracking data manipulation.