Rumble Detector

We were challenged to come up with an idea that uses digital coupons to delight and surprise Burger King guests. Given that people want more food when they're hungrier, we came up with the big idea to allow people to earn more/better coupons based on their level of hunger. From this big idea we created the rumble detector, an in-app promotion that awards coupons based on the loudness of your stomach rumbles.