http://www.wired.com/news/technology/0,69942-0.html?tw=rss.indexHackers Rebel Against Spy Cams
When the Austrian government passed a law this year allowing police to install closed-circuit surveillance cameras in public spaces without a court order, the Austrian civil liberties group Quintessenz vowed to watch the watchers.
Members of the organization worked out a way to intercept the camera images with an inexpensive, 1-GHz satellite receiver. The signal could then be descrambled using hardware designed to enhance copy-protected video as it's transferred from DVD to VHS tape.
The Quintessenz activists then began figuring out how to blind the cameras with balloons, lasers and infrared devices.
And, just for fun, the group created an anonymous surveillance system that uses face-recognition software to place a black stripe over the eyes of people whose images are recorded.
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you really should read the above article to learn some fighting back techniques
"Quintessenz members Adrian Dabrowski and Martin Slunksy presented their video-surveillance research at the 22nd annual Chaos Communication Congress here this week. Five hundred hackers jammed into a meeting room for a presentation that fit nicely into CCC's 2005 theme of "private investigations."
and we surely should bear this in mind:
Ito said these restrictions would stifle free speech and the ability to question authority without retribution. "An open network is more important for democracy than the right to bear arms and the right to vote," said Ito. "Voice is more important than votes."