Eye Tracking Screen Based

Screen-based eye tracking uses software and hardware to track the movement of the eyes as they view a stimulus (or stimuli) on a screen. It allows for the recording and analysis of visual attention in response to multimedia. It’s possible to perform screen-based eye tracking on images, videos, websites, games, software interfaces, 3D environments and mobile phones to provide deeper insights into visual attention.

Near-infrared light is directed towards the center of the eyes (pupil), causing detectable reflections in both the pupil and the cornea (the outer-most optical element of the eye). These reflections – the vector between the cornea and the pupil – are tracked by an infrared camera. Screen-based devices require respondents to sit in front of a monitor and interact with screen-based content.

In short; everything that is taking place on a screen and where the viewer is seated. Images, videos, websites, and UX/UI are amongst the most popular application areas. Screen-based eye tracking is also used for phones and tablets mounted to a stand.

Yes, webcams can offer an excellent low cost solution for eye tracking but they are not recommended for studies which require a high level of accuracy, and are more sensitive to the lighting conditions of the subject due to the lack of infrared light sensors. To use a webcam for eye tracking you can use iMotions Online which also offers emotion recognition.