[IP] Crave privacy? New tech knocks out digital cameras - CNet - 9-19-05
Begin forwarded message:
From: Josh Duberman <pivotalinfo@xxxxxxx>
Date: September 19, 2005 9:02:59 PM EDT
To: David Farber <dave@xxxxxxxxxx>
Subject: Crave privacy? New tech knocks out digital cameras - CNet -
9-19-05
Reply-To: pivotalinfo@xxxxxxx
Hi Dave - For IP, if you like - extract below, the entire article is at
http://news.com.com/2102-7337_3-5869832.html?tag=st.util.print
Thanks and best wishes - Josh
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Crave privacy? New tech knocks out digital cameras - CNet - 9-19-05
http://news.com.com/2102-7337_3-5869832.html?tag=st.util.print
"....The Georgia Tech system essentially exploits the
"retroreflective" property of digital camera lenses. When light
strikes a retroreflective surface, a portion of the light bounces
back to the original source. While eyeglasses, bottles, watches and
other glass surfaces are retroreflective, a coating on virtually all
digital camera lenses puts cameras in a class of their own.
"The film atop lenses (is) highly reflective," said Patel. "A lot of
people probably have known this but they haven't thought about
leveraging it."
In this system, a device bathes the region in front of it with
infrared light. When an intense retroreflection indicates the
presence of a digital camera lens, the device then fires a localized
beam of light directly at that point. Thus, the picture gets washed out.
The neutralizing light continues until the camera lens can no longer
be detected, which prevents video cameras from capturing clear footage.
For added security, the system emits light beams in a pattern that
prevents cameras from compensating for the light. (In the lab
prototype, the video camera, with its built-in infrared beam, serves
as the camera detector, while the projector is the neutralizer.)
The technology can detect and block multiple cameras and works on
cameras with either CCD or CMOS imagers <http://news.com.com/Picture
+this+A+new+breed+of+cameras/2009-1006_3-5559249.html?tag=nl>, which
are used in the vast majority of digital cameras.
The neutralizing light is also highly focused to minimize
distractions. "We only light up pixels where the reflection is coming
from," Patel said...."
--
Josh Duberman, Pivotalinfo LLC
pivotalinfo@xxxxxxx; Cell:(425) 591-8200;
Information For Solutions In Business & Science
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