FreeTrack

Freetrack is a computer program that helps people play games or control things on their computer by using their head movements instead of using their hands.

Imagine you are playing a game where you are flying a plane. Normally, people use a joystick or a game controller to move the plane. But with Freetrack, you can move your head in different directions and the program will make the plane move in the same way.

Freetrack works by using a special camera that can track your head movements. This camera is usually placed on top of your computer monitor. When you move your head, the camera takes a picture of your face and sends that picture to the Freetrack program. The program then calculates how much your head has moved and tells the computer to move things on the screen based on your movements.

This can be really helpful for people who have trouble using their hands, such as those with disabilities or injuries. They can still control their computer by using their head movements thanks to Freetrack.

Overall, Freetrack is a helpful tool that lets people control things on their computer without using their hands, just by moving their head.