According to Ewing:
New York City has an illegal advertising problem. An illegal ad can be fined up to $25,000 a day, yet these fines are rarely collected. Outdoor advertising companies are able to skirt the laws and regulations put in place by the city for three reasons: ads are everywhere, documenting wrongdoing is an arduous task, and many people believe that illegal advertisements are in fact legal.
Ad Patrol is a mobile game that attempts to address the shortcomings of current law enforcement for illegal advertising. Using permit data from the Department of Buildings, the game maps out legitimate advertising in the city and then turns policing into a casual game experience. Players seek out new and existing ads to claim them for their own. To claim an ad, a player takes a photo and documents the company being advertised.