Might not cause damage but there is the Camera Shy Hoodie: https://www.macpierce.com/the-camera-shy-hoodie
Instructions for how to DIY provided, so it doesn't have to be a hoodie.

Might not cause damage but there is the Camera Shy Hoodie: https://www.macpierce.com/the-camera-shy-hoodie
Instructions for how to DIY provided, so it doesn't have to be a hoodie.

if you invent some passive way to damage tech by just being in its vicinity. not only would it be illegal. it would be a super weapon.
A weapon to surpass metal gear?
A weapon to defeat metal gear
How they gonna find out? No cameras to witness it
Eyes aren’t electric…… unless your a bird
What you describe is simply not possible with a passive material. Funnily your example of something shooting lasers is probably the only thing that could come close to actual damage
The most you can do is one of those adversarial patterns that just confuses the white balance and autofocus. There is nothing you can do to affect someone shooting in manual mode
If you could damage a camera by pointing it at something, the manufacturer would fix the issue before selling it, because no one is buying a camera that does.
I am thinking if you could wear a mirror that would direct all the sunlight right at the camera. That would have to be an active tracking system, but wouldn't emit any light itself.
It would have to be parabolic and yeah as you suggest you would either need a big robotic rig to aim it or you would have to be very very obvious with your intent to damage given there's pretty much only one specific place a given parabolic mirror can be to damage something else.
Parabolic would only work if the camera is in the focal point, so you'd need a different part of the parabola or a different parabola depending on where you are standing relative to the camera. This is in addition to the aiming mechanism.
And even then, I'm not convinced it will damage all camera techs instead of just overexposing the image or frame for some. If they just clamp the affected pixels instead of trying to maintain the relative brightness, they might be able to still see your face clearly.
Rick and Morty did this once, Rick simply put on a hat with a QR code that made a robot army recognize him as a high level commander.
A few days ago I read a short story, comp.basilisk.faq by David Langford, which sketched a world in which specific images could irreversibly crash the brain, leading to a full scale worldwide ban on images on the internet and many other places as well. The story postulated hundreds of potential info-hazards with many of them simple enough to be applied via stencil and spray paint. Two of them are branch families of the Mandelbrot set 'and no we won't tell you where, do not look'
Other examples;
"Keep your eyes peeled or we'll peel them for you wholesale!"
You could maybe defeat LIDAR with retro reflectors or something. Probably not, but that's the only case it'd be possible realistically, since it's actively shooting lasers out that you could reflect back, without actually locating the camera. Anything else, yeah it'd require actively finding the camera and attacking it, since it is only receiving light. I guess if you wore something bright enough to damage any camera looking in your direction that would also work, but I don't think it'd be considered passive, and you'd also blind everyone else who can see you, probably permanently, and it'd require huge amounts of energy.
Black Mirror S7E4 - Plaything

That was an episode that ended right where it started getting good. Not that the episode was bad before that, but it left me wanting more of that, not a jump to a new premise in the next episode.
Is that Doctor Who?
My dude is trying to create a shirt that just continuously recharges and fires EMPs lol
It's not possible to damage cameras passively, so there isn't an answer. But if it was possible it probably would be made illegal to wear those around cameras.
Quickly?
Every country is already a surveillance state, and has been for multiple decades.
Just look at Britain with cameras everywhere since at least the 1980's.
Fucking Ring crap just doubled down on it, and idiot people don't even care they're providing the means. 1984 nailed it.
The sensors can definitely be damaged by too much light
Right, I just mentioned that in another comment. I'm not quite sure it would count under OPs restrictions:
The only pattern/material that comes close to what OP is looking for would be a parabolic mirror. If you attach one of these to your shirts and than stand at the exact right angle and distance to a camera, you could damage it. However that is already stretching “passive” because it would require a lot of deliberate actions to position yourself that way. And it pretty much only works when the sun is out.
I think it depends on whether it’s active or passive. Active - e.g. a laser that damages a camera sensor, then yes, your device is actively damaging someone else’s camera - deliberate property damage. Passive - e.g. reflective strips so the exposure is bad, a pattern that is hard to focus on or similar- that’s fine - camera owner is making a decision to expose their gear to the environment. Even if, say, it’s a changing pattern that deceives the autofocus into working constantly (no, I don’t know exactly how that would work, but it’s the best I can think of at short notice) so it wears out faster.
ITT: People debating whether such a shirt is possible and not answering the actual question.
I was watching a dude on TV just now whose shirt pattern was going apeshit because of the camera
Probably aliasing aka moiré effect. Harmless to the equipment.
Also, is there anything like this scenario in real life/law?
Speed bumps do something similar? Entirely passive, harmless, untill encountering certain equipment - a vehicle.
Creating something that damages nearby electronics? Yeah, that's probably not going to fly. It really doesn't matter if it only damages things that actively film/photograph you. Like, it'd be illegal if I walked up and hammered every camera that photographed me too.
Strap a lidar emitter to yourself. Those car sensors have been shown to damage cameras.
If you want privacy from cameras, there are those hats with strong ir leds. Not sure how well they work.
But what if I just want to buy one?
I don't have time to make my own; I have a job.
There are some companies making them for sale.
Thanks but that's 3x more than I'm willing to pay for a piece of clothing. There's no reason why it can't be $20 tops.
Oh come now, surely we can think of one reason.
There, technically, hypothetically, could be a situation where such shirt is possible. But it would require a bug in the camera firmware, which would probably work on just one camera model. For example, a shirt with a pattern that tricks the camera into detecting more faces than it was designed to, causing a buffer overflow and a crash. Reasonable, although extremely unlikely
Damaging a camera is very different from something that makes taking a picture impossible. It doesn't matter if it is passive or active, only the end result is important.
A celebrity might get away with it when just trying to get home but would probably be required to pay for damage to the camera. Anyone at a large venue is going to be ruining everyone's cameras and that would be a huge deal.
A similar thing that might be possible is to create a shirt that shows something that exploits a vulnerability in software. Some hardware can be bricked by software (this used to be the case for MacBook batteries).
Best i can do is an Elton John style jacket. Dazzle them to hell and back.
Looking to get an eicar QR code shirt?
OK you're going to need CO2 gas, 2 mirrors, a glass. Container and a high voltage capacitor.
...
Step 3454674) charge the capacitor to 60078V.
Step 5746678) now run!
maybe if its wearing a shirt with radioactive elements, usually its lethal amounts.
Yes it would be. You're wearing it with clear intent of damaging equipment.
This reminds me of a movie or a tv show where people were sneaking into a compound and disabled the security cameras with a laser pointer.
Pretty sure those devices that block cellphone and radio signals are illegal in public and people have gotten in legal trouble for that
There are things that damage a camera when you point at them, but they aren’t passive. Things like x-ray sources could do that. Also the sun.
So no, even if you reflected 100% of the light from the flash back into the lens, there’s just not enough of it to do any damage.
If you were somehow able to focus all of it on one single pixel on the sensor, you might be able to damage that pixel, but that would require a large piece of optical equipment basically on top of the camera.
Invent?!? Bro, just use infrared LEDs 😂
Not passive. Won't damage cameras.
Yes not passive but you're not thinking big enough.

No, but you will basically look like a bloomed-out version of this:

The FCC has (had? Do they still exist?) rules about this, very straightforward.
I just recently read a short story with a similar concept, all pictures and videos have been banned since there was found to be images that will kill anyone when they look at them.
When I get back to my anthology book I’ll look up what one it was, it’s in the Big Book of CyberPunk.
Yeah even if it wasnt ilegal i bet people would find a way to charge you for it or stop you from using it to protect yourself.
Take the simple option of putting on a balaclava and smashing the cameras.
To those saying it's not possible - modern cameras are highly complicated devices, constantly using little motors to change focus and exposure, driven by AI informed algorithms. Leave it up to some nerd to device a pattern and/or material that could maybe drive those sensors and motors nuts, or something like that.
Unless they invent some kind of new force of physics all you can do here is reflect ambient light.
The only pattern/material that comes close to what OP is looking for would be a parabolic mirror. If you attach one of these to your shirts and then stand at the exact right angle and distance to a camera, you could damage it. However that is already stretching "passive" because it would require a lot of deliberate actions to position yourself that way. And it pretty much only works when the sun is out.
A even worse option would be wearing a shirt made from a radioactive material. (but is it still passive when you're using something radioactive?). And of course this wouldn't just damage the camera but also very much the cameraman, the wearer and anyone else that is around.
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