A white canvas and a dot estimating where you look.
Keep your device still, face the front camera in good light, and look at each calibration target while tapping it five times.
Experimental—not precise word tracking. Camera images are processed in your browser. No video or gaze history is saved or uploaded by this experiment. Tracking stops when you leave this tab.
Uses WebGazer (GPLv3). Tracking code and model downloads require an internet connection.