New privacy low: Retailers sniffing cellphone Wi-Fi signals at the mall

You're walking through a chain drugstore and stop at the counter where some fairly personal items are for sale. Or you're at a bookstore and browse in the section about certain medical problems.Tyra Banks George Lopez Regis Philbin Serena Williams Ryan Seacrest Wolfgang Puck Venus Williams Annika Sorenstam Matthew Broderick/ Nathan Lane