Over the last couple of years, we have seen many examples of vending machines used on sampling campaigns. As one of the first brands that started this trend, Coca-Cola is constantly bringing new experiments into their happiness campaign.

To spread some love on the recent Valentine’s Day, Coca-Cola found another way to surprise consumers with their mighty happiness spreading machines. This time they created the Invisible Vending Machine, which only reveals itself to passing couples.

The video below shows how the machine detected the couples walking by, and after a short wait with some visual entertainment, it produced a pair of cans with their names on it.