Eye tracking guide

Eye trackers work by directing invisible near-infrared light into a person’s eyes and then measuring the reflection of this light with high-definition cameras to determine where their gaze is focused. These cameras and illuminators (the light sources) are usually very small and are positioned inside the eye tracker, as you see with screen-based eye trackers, or they can be integrated into a wearable eye tracker, such as a pair of eye tracking glasses.

Advanced algorithms are used to calculate with great precision where the person is looking based on the direction of the reflected light. This information is used in conjunction with the material displayed on the screen or scene recordings taken from the scene camera on a wearable eye tracker to give an accurate representation of what the person is looking at.

You should use an eye tracker if you want to study where someone is looking. This might be the case if you are studying human behavior within various fields such as psychology, neuroscience, marketing, or human performance.

Eye tracking is also commonly used for user experience testing as it gives great insight into how people interact with a website or design.

Tobii runs numerous eye tracker tests to ensure our products perform to an optimal standard. We have developed a comprehensive test method to confirm the quality of data that our systems produce.

The method takes into account a variety of scenarios and users and clearly outlines accuracy and precision metrics as well as experimental procedures under variant conditions so you can easily understand and interpret the specifications.