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

You will learn how pacemaker data has already sharpened the timeline in Nancy Guthrie’s disappearance and what investigators can — and cannot — hope to get from the device and its manufacturer. Law ...

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

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

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