Those Black Boxes Near Traffic Lights Aren't Cameras – Here's What They Really Do

Drivers often overlook the small black boxes near intersections. But the technology inside them is cleverly changing how traffic lights react to the road.
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FBI Using High-Tech 'Signal Sniffer' in Nancy Guthrie Case to Detect Pacemaker — As the Search for NBC Host Savannah's Mom Enters Week Three

The FBI is deploying Bluetooth "signal sniffer" technology in a bid to detect the pacemaker of Savannah Guthrie's missing mother, Nancy, RadarOnline.com can reveal. According to Fox News, the Pima ...