Applications Areas; Basic Operating Principles; A A P P P P E E N N D D I I X X B B : : A A C C C C U U R R A A C C Y Y A A N N D D P P R R E E C C I I S S I I O O N N M M E E A A S S U U R R E E M M E E N N T T S - Tobii X2-30 Eye Tracker Compact Edition Product Description

1.2

Applications Areas

The modular system can be used both in screen and real-world test scenarios, making way for a very broad spectrum of studies.
You can mount the eye tracker on a laptop, a PC monitor, an all-in-one PC, or even a tablet. Present your stimuli using a projec-
tion or TV. You can study real-world interfaces like a control panel, an ATM or a store shelf. The supplied mounting solutions sup-
port a variety of study designs.
• T T o o b b i i i i X X 2 2 – – 3 3 0 0 E E y y e e T T r r a a c c k k e e r r s s — The X2-30 Eye Trackers are designed for studies primarily aimed at determining precisely
where the participants are looking — the gaze point—rather than studying timing, duration of fixations or eye movements
such as saccades, for example.
• T T o o b b i i i i X X 2 2 – – 6 6 0 0 E E y y e e T T r r a a c c k k e e r r s s — The X2-60 eye tracker is designed for studies aimed at determining precisely where the
participants are looking and for studying and measuring eye fixations and other eye tracking metrics based on these.
1.3

Basic Operating Principles

During tracking, Tobii Eye Trackers use infrared diodes to generate reflection patterns on the corneas of the subject's eyes.
These reflection patterns, together with other visual data about the subject, are collected by image sensors. Sophisticated image
processing algorithms identify relevant features, including the eyes and the corneal reflection patterns. Complex mathematics is
used to calculate the 3D position of each eyeball, and finally the gaze point on the screen; in other words, where the subject is
looking.
Tobii Eye Trackers are designed for use in indoor office environments.
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1 Introduction
Product Description v.1.0 - en-US