Feb 18 2026TECHNOLOGY
Signal Tracker Helps Search for Missing 84‑Year‑Old
Investigators are using a new tool that can find the tiny radio waves from devices like pacemakers. The device, called a “signal sniffer, ” was made by former NSA hacker David Kennedy. He says the pacemaker Nancy Guthrie wears sends a Bluetooth signal every few minutes. Nancy, 84, vanished
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