Eye Tracking on the cheap [closed]

1. What does eye-tracking mean?
2. Can I use my phone as an eye tracker?
3. When should you use eye-tracking?
4. How do I activate eye tracker?

What does eye-tracking mean?

Eye tracking is a sensor technology that can detect a person's presence and follow what they are looking at in real-time. The technology converts eye movements into a data stream that contains information such as pupil position, the gaze vector for each eye, and gaze point.

Can I use my phone as an eye tracker?

Smartphone eye-tracking is possible on Android and IOS devices and does not require any additional hardware.

When should you use eye-tracking?

Eye tracking is, simply, the observation and recording of eye behaviour such as pupil dilation and movement. It has applications in many areas, including psychological research and packaging design, but with regards to screen-based media, it's primarily used by researchers to identify where users are looking.

How do I activate eye tracker?

To turn on eye control, go to Settings > Ease of Access > Eye control and turn on the toggle.