A Coke machine at the National University of Singapore says "Hug Me" on the outside.
The Huffington Post says it requires a hug instead of money in order to get a bubbly beverage.
Coke is known for its innovative marketing. The machine trading hugs for free Cokes is part of the company's "One Happiness" campaign. It's one of many such machines placed around the world since 2009.
