What do you get when Harley Davidson put 3 electrical engineers, 1 physics professor and one defense technology consultant in a room for 13 months? Why the invisible photobomb! Obviously, I mean it’s in the title and all! We all like a good looking bike, and some of us love to have our photo taken with them, and only fantasize about owning one. Well what these people don’t realise is that it is possible to own their own, they just think it’s too expensive. So Harley Davidson created a backdrop for some awesome bikes parked in towns to create a new kind of mobile advertising. To the naked eye it was just a black wall. To the mobile phone it displayed an image, a perfect way to target the correct audience for their campaign.