The Idea
Burger King asked a simple question: how deep does your love for the Whopper run? The answer was measured — literally. An in-restaurant kiosk used a pulse sensor to measure your heart rate, then calculated your "Whopper Love percentage" in real time. The higher your love, the bigger your discount.
The activation was supported by a TVC that brought the concept to life with warmth and wit — turning a burger into a love story, and a love story into a reason to visit the restaurant. On Valentine's.
The result: a brand mechanic that was measurable, memorable, and very, very Burger King.