GranataPet recently launched a new interactive campaign that shows how clever marketing can get.

As featured on Mashable, this campaign (running in Germany) introduced a new, Pomegranate-based dog food to their target market (dog walkers) at a plausible point of entry (while they are walking their dogs.)

Check in on Foursquare. Your dog gets a snack. Or, as they put it, “Check in. Snack out.”

With the most highly coveted consumers holding smartphones, interacting with them on this level by providing small rewards for participation is something we will see much, much more of in the future.