New York Sen. Charles Schumer has dubbed Clear Channel Outdoor Americas' so-called RADAR 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 Bond-like personal tracking device for a corporation to gather information about consumers without their consent," Schumer, a Democrat, said in a statement ahead of a planned news conference Sunday in Times Square, where the company operates billboards.
source: ABCNews (including featured photo)
I remember seeing a similar concept in a movie by Tom Cruz - Minority Reports when he entered the mall and start showing advertisement that matches his personality. In spying billboards example, using smart phones history data when you visit a websites, banks, shopping or your social media activity.
Related: How to clear your iPhone browswer history (cookies)?