'Big brother' buildings offer less invasive security / NewScientist.com news service, 09 April 2008

URL http://technology.newscientist.com/channel/tech/dn13632-big-brother-buildings-offer-less-invasive-security.html?feedId=online-news_rss20
Tracking people's every move using buildings packed with motion sensors is more effective than CCTV, and less invasive to privacy, say researchers who tried the technique on their own colleagues.