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

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

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

The “ethical hacker” who created the Bluetooth “signal sniffer” being used to try and track Nancy Guthrie’s pacemaker said he created the high-tech tool specifically for the search to find the missing ...

An expert tells PEOPLE why pacemakers have Bluetooth technology, and how it can help locate Savannah Guthrie’s missing mother ...

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

Pacemaker tracking technology used in Nancy Guthrie case reveals how medical devices become surveillance tools for law enforcement investigations.