These systems use multiple cameras to track the movement and direction of gaze in real time.
Nemoto walked up to him, her camera tracking the small creature.
An optical mouse uses a tiny digital camera instead of a rolling ball to track movement.
The inmates move in small groups without guards to escort them, although cameras track their movements.
He turned, and the camera tracked what he was seeing.
Typically, the cameras will track patients and their families for six to nine months.
The camera tracks back and forth from bedroom to kitchen as the servants go about their chores.
The camera had tracked the VH-60 until it disappeared into the tree line.
Already the camera was tracking back to show that the program was ending.
The cameras tracked the two men as they walked to the inner door.
