Two Naperville mothers were arrested Wednesday, after they tried to block utility workers from installing new smart meters." Their arrests were the culmination of a two-year battle against "smart meter" installation in Naperville. At Jenn Stahl's home ... officers were forced to cut open a lock on her back gate to allow crews to get in to access her meter, when she refused to open the gate herself. When Stahl stood in front of her old meter to block the crews, she was arrested for interfering with a police officer. Several hundred Naperville residents oppose the wireless "smart meters," citing concerns about possible health problems that might be caused by the meters' wireless signal, which is always on. They have said studies show the RF signal could be dangerous, when combined with other RF frequencies already in existence. At other homes, Naperville utility workers hopped fences onto private property to install the meters over homeowners' objections. Kim Bendis filmed utility workers at her home as she told them to leave, but they started replacing her meter anyway. She was arrested while shooting video of police officers. When officers told her to stop her ... recording of them, she refused, and she was arrested. Opponents of the "smart meters" also have cited security concerns, because the meters are capable of tracking exactly when a customer is using electricity, and opponents fear it would allow strangers to know when they are home, or gone at work. Some fear hackers could access that information.