It works really nicely. Sometimes it will go along time between blinks and you can have a staring contest. Sometimes it blinks twice in quick succession.
But through some quirk in the code that I don’t understand, if you don’t interact with the site for a while it defaults to the eyes-closed state, and the eyes stay closed until you interact again. It sleeps. I don’t understand how this happens—the function is written so after 150 miliseconds, the eyes should reopen. I don’t understand it, and I love it.