from the The-unseen-mechanized-eye dept.
holy_calamity writes "A Canadian firm has launched a device that can track the gaze of multiple people from up to 10 metres away. Originally developed at Queen's University, Ontario, they hope to sell it to advertisers to allow them to monitor how many people look at their ads. Admittedly they are trying more benign stuff too like better hearing aids, but I doubt that will make up for movie posters that make a song and dance whenever you glance their way."
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"