Security Basics mailing list archives
Re: Seeking a solution for detecting hidden cameras
From: "S. Schappert" <scottsch () ix netcom com>
Date: Tue, 13 Mar 2007 16:04:15 -0700 (GMT-07:00)
G'day, Also there exists some types of optical scanning devices. Any camera will have some type of optical surface associated with it (lens). One quality of such a surface is a reflective component; light from a specific source (e.g. laser) that may strike the first surface of the lens will reflect off the lens itself. Should the reflected light have two qualities, one being a specific wavelength, the other coherence, it is possible to detect the presence of an optical surface across a plane, using some type of device that will be able to capture or identify reflected light. The basic concept of a radar system suffices to give example. Many conditions, e.g. aspect ratio (depth of lens from a surface) and lens curvature (diopter) will affect a detectors ability to identify the presence of an optical surface. Knowing this weakness, countermeasures exist that can hide or reduce the ability to detect an optical surface by some antireflective material. This can extend from a diffuse covering of the lens, to AR (antireflective) optical coatings. Further, both UV (ultraviolet) or IR (infrared) wavelengths have interesting qualities associated with them due to the fact that these wavelengths can be outside of the visible spectrum of light. UV and IR lasers are incredible tools for these and other types of applications. Neat stuff ! -Scott S. Ex nihilo nihil -----Original Message-----
From: Buz Dale <buz.dale () usg edu> Sent: Mar 13, 2007 10:15 AM To: security-basics () securityfocus com Subject: Re: Seeking a solution for detecting hidden cameras How about a nice bright coat of paint and a daily inspection procedure? Buz On 3/13/07, Yan Zhai <yanzhai () gmail com> wrote:This may sound a little bit unrealistic, but how about having very strong light source (maybe with high intensity of UV) in the room for a while, to burn those hidden cameras' CCD? I think most such cameras should have quite sensitive CCDs to be effective under indoor light condition. On Mon, 12 Mar 2007 19:54:13 -0400, Murda Mcloud <murdamcloud () bigpond com> wrote:Good idea Todd. Any mesh would definitely make it messy to drill a hole. Just a thought, are there any small cameras that would have an in built recording function? And if so, would this kind of camera be affected by the mesh? -----Original Message----- From: Mondragon, Todd [mailto:todd.mondragon () fmr com] Sent: Tuesday, March 13, 2007 2:00 AM To: Murda Mcloud; Pranav Lal; security-basics () securityfocus com Subject: RE: Seeking a solution for detecting hidden cameras No need to jam, a wire mesh placed in the walls and grounded will stop most RF devices cold. The mesh should be of the same type as screen door mesh (must be wire though!) to be able to stop any 2ghz signals. The mesh would also need to be electrically contiguous of course. Might make it hard to drill as well, the mesh would foul any powered bits and a hand tool would have great difficulty dealing with it as well. Todd Mondragon -----Original Message----- From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Murda Mcloud Sent: Sunday, March 11, 2007 7:53 PM To: 'Pranav Lal'; security-basics () securityfocus com Subject: RE: Seeking a solution for detecting hidden cameras One thing to do would be to build the room as clean and free from places that cameras could be hidden etc. ie no benches etc. Make it so that any tampering would be obvious. Also, make the walls etc out of something that would be hard to drill a pinhole in. Then some of those detectors that you listed could be used-though I can't vouch for any of them. Maybe there's a way of jamming signals too? -----Original Message----- From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Pranav Lal Sent: Friday, March 09, 2007 6:08 PM To: security-basics () securityfocus com Subject: Seeking a solution for detecting hidden cameras Hi all, I have been asked by a client to find a solution for detecting cameras in dressing rooms etc. The client has trial rooms where customers can try various garments. The concern is that some one could plant a camera in one of these rooms and photograph customers. I have checked online and have found the following sources; http://www.brickhousesecurity.com/sf-103.html http://www.spytechs.com/bug_sweep_equip/vcd_43.htm http://www.pimall.com/nais/countervideo.html http://www.intpro.co.uk/pinhole.htm http://www.intpro.co.uk/camera%20detector.htm Are there any others? Has any one on this list tried any such solutions? I have found an interesting reference on hiding and detecting cameras at http://www.tentacle.franken.de/papers/hiddencams.pdf Pranav-- Yan Zhai Ph.D. Cyber Defense Lab NCSU-- Buz Dale buz.dale () usg edu IT Security Specialist 1-888-875-3697 (In GA) 1-706-583-2005 Office of Information and Instructional Technology University System of Georgia GMT -5:00
Current thread:
- Re: Seeking a solution for detecting hidden cameras, (continued)
- Re: Seeking a solution for detecting hidden cameras Yan Zhai (Mar 13)
- Re: Seeking a solution for detecting hidden cameras Buz Dale (Mar 13)
- RE: Seeking a solution for detecting hidden cameras Steve Armstrong (Mar 14)
- RE: Seeking a solution for detecting hidden cameras Pranav Lal (Mar 13)
- RE: Seeking a solution for detecting hidden cameras Steven Hess (Mar 13)
- RE: Seeking a solution for detecting hidden cameras S. Earl Jarosh (Mar 14)
- RE: Seeking a solution for detecting hidden cameras Pranav Lal (Mar 15)
- RE: Seeking a solution for detecting hidden cameras Steven Adair (Mar 13)
- RE: Seeking a solution for detecting hidden cameras Pranav Lal (Mar 14)