There apparently are some retail stores, in the US and Europe, who use EyeSee mannequins to check the kind of shoppers they have. The mannequin has a camera embedded in one eye. It sends the gathered data in a facial recognition software which logs the age, gender and race of the person it sees.
This technology was first used in airports to identify criminals. But it has been a big help to retail stores, who use the technology, improve their day to day operation.
Next time you inspect a mannequin on a stores display window, don't forget to put on your best smile. You'll never know if a mannequin is "spying" on you.