  Gaze tracking is an important technology as the system can give information
about a person from what and where the person is seeing. There have been many
attempts to make robust and accurate gaze trackers using either monitor or
wearable devices. However, those contraptions often require fine individual
calibration per session and/or require a person wearing a device, which may not
be suitable for certain situations. In this paper, we propose a robust and a
completely noninvasive gaze tracking system that involves neither complex
calibrations nor the use of wearable devices. We achieve this via direct eye
reflection analysis by building a real-time system that effectively enables it.
We also show several interesting applications for our system including
experiments with young children.
