http://www.technologyreview.com/blog/arxiv/24193/Wireless Network Modded to See Through Walls
The way signal strength varies in a wireless network can reveal what's going on behind closed doors.
Researchers at the University of Utah say that the way radio signals vary in a wireless network can reveal the movement of people behind closed doors. Joey Wilson and Neal Patwari have developed a technique called variance-based radio tomographic imaging that processes the signals to reveal signs of movement.
Now all they have to do is hook up your wireless to your Cpap machine, your pacemaker and feed all that info right your medical records.
Did move you enough today to get the required minimum exercise to qualify for weight loss compliance?