Investigators searching for the kidnapped mother of US TV star Savannah Guthrie have brought in a helicopter-mounted “signal sniffer” in an attempt to locate her pacemaker. Law enforcement sources ...

Inside Dewar’s cavernous whisky warehouses, man’s best mechanical friend—a Boston Dynamics robot dog with an ethanol sensor for a nose—is on the hunt for leaky barrels. Wooden barrels are what make ...

Investigators are using a tracking device called a "signal sniffer" that can detect signals emitted from electronic devices as the search for Nancy Guthrie continues in its third week. David Kennedy, ...

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