Gaze and head orientation are used as features to determine engagement when a participant has video enabled. As an example, when a head is not facing the camera, one would assume they are not paying attention, but in reality, they have a second screen. One feature to measure a second screen is when someone is looking away from the camera, is their head stationary, or is it moving. Stationary indicates focus, while high movement indicates they are distracted (e.g. talking to someone else in the room, using their phone).