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Cell-Tracking Bills Require Info Dump for Missing Persons
Mobile phone companies would have to immediately turn over location data to emergency responders to help them quickly track missing persons, if any one of the four bills floating in the House get traction. The law already allows, but does not automatically require, phone companies to turn over ping data from cell towers in emergency situations absent court warrants. The proposals would require telcos to promptly hand over the information if authorities tell them that harm or death are imminent.
Continue reading »Wireless Network Signals Produce See-Through Walls
Researchers at the University of Utah have found a way to see through walls to detect movement inside a building. The surveillance technique is called variance-based radio tomographic imaging and works by visualizing variations in radio waves as they travel to nodes in a wireless network. A person moving inside a building will cause the waves to vary in that location, the researchers found, allowing an observer to map their position.
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