Clear Channel Outdoor Americas inked a deal with AT&T and other companies to enable it to track people, via their mobile phones, who pass its tens of thousands of billboards across the United States. Called RADAR, the new service will, says Clear Channel Outdoor, give advertisers better tools to measure the effectiveness of billboard advertising. RADAR will be offered in Clear Channel Outdoor’s top 11 markets, which includes Los Angeles and New York, with availability across the country later this year. Continue reading Clear Channel Outdoor Billboards to Track, Identify Passersby