The document discusses the evolution and adoption of digital signage and interactive digital out-of-home (DOOH) media. It notes that the US digital out-of-home media industry is estimated to grow 11.2% annually from 2007 to 2012. Marketers and retailers expect to increase spending on shopper marketing programs that use digital signage. The document also explores how digital signage can enhance the retail experience, increase in-store sales, build brands, and drive traffic to other channels. It provides examples of evolving digital signage technologies, content strategies, and content management systems.