A billboard hooked up to a server, dishes out dog food with the help of your smartphone.

The marketing team for Granata dog food in Germany, has designed a unique collaboration with Foursquare that will make both owners and pets howl with delight. Every time you and your furry friend pass a bowl-equipped billboard for Granata food, you can check in on Foursquare and the billboard will dispense a free sample of the kibble into the attached dish.

This way your pup can decide for him or herself as to whether you should invest in the stuff for their next meal.

For a full explanation of the black box technology involved, take a look at the video below:

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