The Pima County Sheriff's Department previously highlighted the significance of Nancy’s pacemaker in the investigation, ...

Authorities are attempting to use the device to detect the signal on Nancy's pacemaker over two weeks after she was reported missing ...

As the search for Savannah Guthrie's mother, Nancy, continues, a cardiologist explains how pacemakers work and if they can be ...

The “ethical hacker” who created the Bluetooth “signal sniffer” being used to try and track Nancy Guthrie’s pacemaker said he ...

Information about Nancy Guthrie's pacemaker helped authorities piece together a new timeline in her kidnapping. Can the ...

A device that can pick up certain electronic signals is being used in the search for Nancy Guthrie, as it may detect emissions from her pacemaker, sources told CBS News.

Savannah Guthrie's 84-year-old mother Nancy has been missing since February 1, and it is believed she was taken from her home ...

Unconfirmed media reports say Nancy Guthrie's pacemaker stopped syncing with her Apple devices. Here's what that means.

They’re searching for Nancy Guthrie’s heartbeat. Cops are flying over the Tucson desert with a high-tech Bluetooth signal detector, also known as a signal sniffer, in an attempt to locate a signal ...

The FBI is using "sophisticated" technology to try to locate Nancy Guthrie's pacemaker, as the search for the mother of US TV ...

The "signal sniffer" being used in the Nancy Guthrie investigation was mounted on a helicopter on Monday.

Investigators are using signal sniffer to try to detect Nancy Guthrie's pacemaker.