Our eyes are our windows to the world. There is more behaviour from the face that gives relevant information other than facial expressions. Our gaze reveals what we are looking at and this often indicates what we find important. The size of our pupil responds to variations of lighting but also to task demands. As part of the MIT EyeReader project together with our partner Noldus, we have researched webcam-based eye tracking and pupil analysis. Standard eye-trackers use infrared cameras to assess these eye metrics and thus require specialized hardware. Eye tracking analysis from a webcam will make the applications a lot more flexible. We will continue developing the technology, but here we describe the validation results of two of the most important components of the successfully completed project.