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 ...

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 ...

Police searching for missing Nancy Guthrie have deployed helicopters fitted with 'signal sniffers' to detect her pacemaker's Bluetooth signal over the Arizona desert. The kit, which investigators are ...