Gap serves 2.5m location-triggered ad impressions with Zynga

Clothing retailer Gap delivered 2.5m mobile ad impressions in just over two weeks through a campaign that combined traditional display advertising with geo-fencing technology.

Display ads were placed at transport locations, including bus stops, in New York, San Francisco and Chicago.

Ad agency Titan then created a geo-fence around these, which served an ad through Zynga’s Words With Friends app that included a coupon for $10 off a $50 purchase.