? A bill that would make it easier for law enforcement to track down a missing person through a wireless device is on its way to the governor.

House members approved a compromise measure 125-0 on Thursday, a day after the Senate approved it 39-0.

The measure says cell phone companies must release caller location information promptly to police when asked. Cell phone signals, known as pings, can be used to track a phone’s location.

The bill was inspired by the 2007 kidnapping and slaying of 18-year-old Kelsey Smith, of Overland Park.

Smith’s parents, Greg and Missey Smith, have pointed to a delay in getting their daughter’s cell phone provider to cooperate with police.