Schumer: Probe billboards using phone data to track shoppers

 NEW YORK (AP modified) — A U.S. senator is calling for a federal investigation into an outdoor advertising company’s latest effort to target billboard ads to specific consumers.
New York Sen. Charles Schumer has dubbed Clear Channel Outdoor Americas’ so-called RADAR program “spying billboards,” warning the service may violate privacy rights by tracking people’s cell phone data via the ad space.
“A person’s cellphone should not become a James