This runs entirely in your browser using your webcam. You'll calibrate
by clicking 9 dots while looking at them, then look around the screen
freely for a few seconds. Afterwards you'll see a heatmap of where your
eyes looked.
Click each dot 5 times while looking directly at it. Dots turn solid green when done.
Calibration complete
Choose an exercise:
Look at each numbered target in order (1→5), then repeat, until time runs out.
5
Where you looked
Less attentionMore attention
Look at the shelf naturally, as if deciding what to buy.