Oswald Ryan

Eyes often tell a tale about a person’s nature, likings, and disliking. They reveal a person’s reaction to a certain stimulus. For decades, efforts are on to track eyes’ movement to understand human behavior. With time, technology has opened doors to track eye movement. Now, one can determine the movement of the pupil, where a person is staring at, and for how long. This knowledge plays an important role in accurately measure visual attention.   An eye tracker sends near-infrared light to the eyes. As the light gets reflected from both the pupil and cornea, HD cameras attached to the tracker records it. Therefore, through advanced calculations, the software tells where a person is looking at. The trackers allow mapping the eye’s position multiple times in a second. They also offer a visual map explaining a person's reaction to different elements of a scene.     Types of eye trackers 1. Screen-based    They are remote devices and you have to attach them with...