Comments on: Remote laser security camera defeat

By: Lesa Ellingsworth

Lesa Ellingsworth — Sat, 17 Oct 2009 01:04:22 +0000

Blog?

By: david

david — Tue, 25 Nov 2008 15:29:29 +0000

this is a cool idea, but i would just sneak by behind a fat guy. then, when they check the footage they blame the fat guy. lol

By: DAVE

DAVE — Thu, 22 Nov 2007 14:31:14 +0000

CAN SOMEONE TELL ME HOW TO KNOCK VIDEO SURVEILLANCE CAMERAS OUT OF COMMISION AT THE WORKPLACE EVEN FOR THE COMPUTER DUMB

By: Kilroy

Kilroy — Sat, 29 Sep 2007 17:00:52 +0000

I can’t say whether this will work or not, but almost nobody uses IR cameras. They use IR sensors. And these IR sensors are tuned to a specific size and heat, and possibly height above ground, so if you wear an emergency “space blanket” blanket around you, or take a dip in a pond wearing some water absorbing clothes, you may pull it off, but then remember to cover your top body and head. These sensors are set for weight of the animal, 20-35 kg or 5-15 kg, or other, but places with more than a few thousand dollars cash may have sensors tuned to go off on even a rat, so the best way to avoid it is to recon openly and break in through the roof and walls.

but I recommend going the path of least resistance and be a smalltime crook instead, that will save your ass from prison-gayness in the long run.

By: Bob smith

Bob smith — Tue, 04 Sep 2007 05:01:14 +0000

i say if your gonna bloody steal somthing just f###### grab what you want and go for gods sake F*&^! by the time the bloody laser has the (one coler of the) camera blinded they will have seen you! unless that thing wth the ither two colers worked maybye find a good spot outsid and get it fom there… btw we dont need Goddamn technology taking over our sport. com on! it s all about slite of hand i happen to have it to a pretty good art (not after triel and error) ;)

so if it works great other ill stick with my method

you know those security thigs by the door? we need like a jammer for those dont work for a while am not good with electronics but freind sent me here, mabi its bullshit and i dont need one

By: nathan belomy

nathan belomy — Sat, 18 Aug 2007 01:08:23 +0000

omg the cia is going to come and take you hostage! totally weapons of mass destruction.

By: john

john — Fri, 17 Aug 2007 04:26:17 +0000

the point isn’t to stop a guard from realizing what is going on. the point is to destroy evidence that might lead to your capture by obscuring your identity.

By: elbarto

elbarto — Thu, 16 Aug 2007 22:40:13 +0000

A more in depth exploration of this can be found at http://naimark.net/projects/zap/howto.html (linked from the wikipedia site on CCTV)

It seems to be somewhat efficient but a far cry from actually blinding the camera. As can be seen on the site, and I did a bit of testing at home and came to the same conclusions, filtering the red spectrum of the image reduces the effect quite a bit but not totally which is a bit surprising since laser light is highly monochromatic, I suppose the CCD and compression add some artifacts that elude the filter (the source of the light looked more yellow than red.)
This method could probably be used to obscure a portion of the image, such as a face, but could hardly blind a security camera (those are probably better built than your average digital camera/ webcam) completely.

Maybe this could be improved on by adding a dispersion lens at the laser, since the light is very coherent the lens could be adjusted depending on distance to cover the entire camera lens.

This seems a bit silly to use against security cameras anyways, I would think a bright red spot on the monitor would catch the securityguards attention.

By: doogle

doogle — Thu, 16 Aug 2007 10:42:28 +0000

Seems to me that if you were to use a slightly broad-beam (not a laser, or maybe a laser with a special lense– broad beam in order to compensate for oscillating cameras) light, outside of the visible spectrum for the human eye, you might fool the camera into adjusting its contrast until it is too low to make anything else out. This would probably only work with outdoor cameras intended to work at day an night, however, sense it wouldn’t make sense to do that for an indoor camera where light is relatively constant. Then of course there is the issue of motion detectors, which you might set off if you use the same wavelength of light it uses, or by simply forgetting about them and moving under them. To be used in a practical situation, you would probably have to find a target which does not use motion detectors– a common scenario in places where guards or especially guard dogs are in place (which present their own problems, but still manageable).

By: tbare

tbare — Wed, 15 Aug 2007 22:43:01 +0000

@ Snorkle

nice! i like that idea better than that security camera one… let me know! :)

By: Hellblazer112

Hellblazer112 — Tue, 14 Aug 2007 08:40:41 +0000

#20 To turn off a Streetlight a laser wouldn’t work beacuse although it is concentrated light the dome that covers defuses the light so a laser would be just as effective as asking it to turn off. Now if you could get above it and shine a light on it, thats a whole ‘nother story.

This is pretty cool but I don’t get what he left out.

By: charc

charc — Tue, 14 Aug 2007 01:27:09 +0000

ir would work, many security cameras are ir cameras as well. to make it a non ir camera, they actually have to insert a filter. and we’re not talking heat here. we’re talking near visible light ir. like the led in your tv remote. an ir laser could very well blind the camera.

By: ehrichweiss

ehrichweiss — Mon, 13 Aug 2007 21:16:18 +0000

@Hockeytree: let me put some of this in perspective for you. Take a 1 watt light bulb and look at it. No worries. Now take a 1 watt laser and look at it. No eyes. A laser is concentrated light(to put it simply) and it would be enough to blind most cameras even with their IR filtering.

By: snorkle256

snorkle256 — Mon, 13 Aug 2007 16:32:50 +0000

I’m interested in this hack not for the remote video blinder but for the awesome mount and laser scope. I’ve been wanting to build one to see if a laser puts out enough light to trick a street lamp into shutting off. Nefarious Halloween plans I have.

By: Peter

Peter — Mon, 13 Aug 2007 16:18:55 +0000

@17

a one way reflectiv material wouldn't make a difference to a laser blinding attack. it stops light getting out so you can't see the where the camera is poining, but light can still get in for the camera to work. so that means that the laser light can stil get in and (maybe) blind the camer

but then again, if you can't see where the camera is pointing, how do you know where to poin the laser?

and wouldn't the camera see you setting this up, either catching you in the act, or making sure someone (a security guard) goes to find out what the device is/remove it/steal your mobile phone :)