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Wearable Microphone Jamming

sandlab.cs.uchicago.edu

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Re: Wearable Microphone Jamming

#91

Post by matheusmoreira »

dylan604 wrote: post #54
sitic wrote: post #28

Earlier quoted context omitted.

"Police officers in Beverly Hills have been playing music while being filmed, seemingly in an effort to trigger Instagram’s copyright filters." https://www.vice.com/en/article/bvxb94/is-this-beverly-hills...

The cops are not trying to post their footage to the socials. They want you to not be able to do it. If they need their footage, it's to prove you were being an asshat and deserved whatever happened to you. If you need their footage, it'll mysteriously not be available for some technical or clerical error.

Why depend on their footage? We need to record them ourselves. Counter their surveillance with our own sousveillance.

Re: Wearable Microphone Jamming

#92

Post by garyfirestorm »

sitic wrote: post #28
Fnoord wrote: post #22

Earlier quoted context omitted.

Police wont't generally use something like this as it would interfere with bodycam which includes a microphone.

"Police officers in Beverly Hills have been playing music while being filmed, seemingly in an effort to trigger Instagram’s copyright filters." https://www.vice.com/en/article/bvxb94/is-this-beverly-hills...

Why can’t instagram distinguish between a public performance vs a cop playing music. Should be pretty easy to do.

Re: Wearable Microphone Jamming

#94

Post by Zenst »

triactual wrote: post #73
Zenst wrote: post #62

Earlier quoted context omitted.

You may find a small bit of capstan tape over the mic will, whilst reduce the mic's sensitivity a little - equally achieve the same results against this.

*Kapton tape, presumably. A capstan is an interesting thing though: https://en.m.wikipedia.org/wiki/Capstan_(nautical)

yes, thank you for clarifying and dispelling the confusion my spelling opps did there.

Re: Wearable Microphone Jamming

#95

Post by mcbits »

ruined wrote: post #82
AlbertCory wrote: post #78

How about camera jamming with UV (for example, on your car's license plate)? I imagine this has been discussed on HN before (if so, just send me the link),

that could be defeated with a simple UV filter over the camera lens, likely already in place ir camera jamming is doable and well-known enough to appear in media like crime dramas none of it is very practical because you're still extremely identifiable as "that one with all the lights" and presumably still visible in the visible spectrum when police jam cameras at protests they just use bright visible strobes

> when police jam cameras at protests they just use bright visible strobes

Ironically then the story just goes from "here police are brutalizing the people protesting brutality" to "and also being childish with their flashlights." Bright lights aren't nearly as blinding to large-sensor cameras with good lenses as they are to cheap cell phone cameras.

Re: Wearable Microphone Jamming

#96

Post by Raidion »

ris wrote: post #79
pepoluan wrote: post #68

Earlier quoted context omitted.

The case would be if someone is recording you with a microphone placed somewhere unknown in the room. With the bracelet, and humans' tendency to move their arms while speaking, microphones around the room will be jammed at least part of the time.

But you could surely just randomly vary the beamforming to get the same effect, right?

Beam still has to be in the direction of the mic, which wouldn't help if your body is blocking most of the direct waves. You get some scattering, sure, but I think ultrasonic is pretty absorbable, right?

Re: Wearable Microphone Jamming

#97

Post by tgsovlerkhgsel »

Goety wrote: post #2

How quickly are they going to go commercial with this?

I've seen such devices openly sold years ago, and heard of them probably a decade ago (meaning you could buy them well before that if you had the right contacts, but unless either spying or preventing it is your job, you wouldn't have those).

Re: Wearable Microphone Jamming

#98

Post by shkkmo »

concordDance wrote: post #80
FractalParadigm wrote: post #45

Earlier quoted context omitted.

What I find ironic, is the police are doing a copyright infringement (unauthorized public performance of these songs) in order to infringe on citizens' rights. Why are record companies not more pissed about this?

It's not performance as there's the lack of intent to have others hear it and few will. You can play music for yourself in public even if others overhear.

Doesn't playing a song with the explicit intention of having it be recorded count as having intent to perform?

Re: Wearable Microphone Jamming

#99

Post by dylan604 »

matheusmoreira wrote: post #91
dylan604 wrote: post #54

Earlier quoted context omitted.

The cops are not trying to post their footage to the socials. They want you to not be able to do it. If they need their footage, it's to prove you were being an asshat and deserved whatever happened to you. If you need their footage, it'll mysteriously not be available for some technical or clerical error.

Why depend on their footage? We need to record them ourselves. Counter their surveillance with our own sousveillance.

It's almost like you missed the point. The cops are playing music because someone else is recording them. That is the counter surveillance.

Re: Wearable Microphone Jamming

#100

Post by spicybright »

garyfirestorm wrote: post #92
sitic wrote: post #28

Earlier quoted context omitted.

"Police officers in Beverly Hills have been playing music while being filmed, seemingly in an effort to trigger Instagram’s copyright filters." https://www.vice.com/en/article/bvxb94/is-this-beverly-hills...

Why can’t instagram distinguish between a public performance vs a cop playing music. Should be pretty easy to do.

Doubt it. Copyright violation detected is fully automated for the most part, and very good at detection regardless of background noise.

You would need a human viewing footage and listening for every single post to determine this.

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