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An expert tells PEOPLE why pacemakers have Bluetooth technology, and how it can help locate Savannah Guthrie’s missing mother Nathan Congleton/NBCU Photo Bank/NBCUniversal via Getty The Bluetooth ...

The Pima County Sheriff's Department previously highlighted the significance of Nancy’s pacemaker in the investigation, revealing additional details about its role in an approximate timeline of her ...

Add Yahoo as a preferred source to see more of our stories on Google. As people follow Nancy Guthrie's disappearance, people are wondering how investigators are using her pacemaker to find her.

Add Yahoo as a preferred source to see more of our stories on Google. The search for Nancy Guthrie is in its eighth day, and investigators are still working around the clock to find her—and to find ...

Emily Mae Czachor is a reporter and news editor at CBSNews.com. She typically covers breaking news, extreme weather and issues involving social justice. Emily Mae previously wrote for outlets like the ...

The FBI is using advanced bluetooth technology to try to find Nancy Guthrie's pacemaker. Pacemakers emit signals that could provide clues to the whereabouts of the missing 84-year-old. Flying ...

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 search for Nancy Guthrie is in its eighth day, and investigators are still working around the clock to find her—and to find the person (or persons) behind her disappearance. Authorities believe ...

TUCSON, Ariz. (KVOA) - On Feb. 3, two days after Nancy Guthrie disappeared, a Pima County helicopter was flying low to the ground, just above Guthrie's home in the Catalina Foothills. Investigators ...

Authorities searching for Nancy Guthrie are deploying a piece of specialized tracking technology — commonly referred to as a “signal sniffer” — in an effort to detect emissions from her implanted ...

A device that could detect signals emitted from Nancy Guthrie's pacemaker is among the tools investigators are using as their search for her continues into its third week, law enforcement sources told ...