At first when I saw this page, I thought they count the number of people in a store through an eye-tracking device or facial recognition. This isn't too far off

At first when I saw this page, I thought they count the number of people in a store through an eye-tracking device or facial recognition. This isn't too far off. In version 3.0 we will be seeing the ability to identify shoppers who are on a shopping spree by ringing a beep as they enter the store. Sad.