How would you feel if an advertisement was doing something while you weren't watching it? That's just what a new type of ad does in Germany. The new ad at a bus stop in Hamburg Germany changes - whether or not someone's looking at it. This particular ad shows a happy couple smiling and acting normal with the phrase "It happens when nobody is watching", talking about domestic violence. When you aren't looking at the ad, the man in the ad looks as if he is beating the woman.
How does the ad know when someone is looking at it? With a built-in camera that features eye-tracking technology. Using this, it can detect when eyes are on it and change.
For a more direct effect of the advertising, when you first walk up to the ad you will see the man beating his wife and then after a small programmed delay it will change back to the man and woman happy again.
Bus Stop Ad Changes When Someone Is Looking At It