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An LAPD helicopter claimed to have ID'ed protesters from above and threatened to "come to your house"
(www.motherjones.com)
this post was submitted on 10 Jun 2025
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Having a small faraday bag around is useful too, that's what I do.
I wouldn't trust a foil bag to do anything 100%.
the only 100% way to not be caught is not bring it.
it also provides an alibi. "see, my phone was here all day long."
I'm talking about an actual faraday bag, not a foil bag. That, combined with a powered off device keeps you fairly protected. They aren't going to get into your phone if it's powered off.
There's going to be a deviation in usage regardless, it's not providing an alibi. A gap of time when you're not using your device that you normally would be is a marker they look for. They key is keeping them locked out (again, power them off).
I mean, a proper Faraday cage will block anything unless the US government has figured out how to break the laws of physics...
A proper Faraday cage, a truly excellent one, just the most Faraday of all the cages, is easily defeated by physical attacks such as getting your phone cloned when you get mass arrested and summarily released on OR.
Faraday cage does not prevent gyroscopes and accelerometers from working. Then if you remove it from a faraday cage in the future, it will transmit all that movement
Since you're posting this all over the thread, I'll also have to repeat the information that gyro/accelerometers are not capable of doing that. Small measurement errors stack up and throw it completely off.
Without GPS or tower based error correction any location prediction based on conservation of momentum in the phone will be useless before very long if the phone is moving.
Sounds theoretically possible I guess...
Not good enough. Phones can figure out its location using gyroscopes and accelerometer, then if at any point in the future, you remove it from the faraday cage, your entire movement logs are transmitted.
This is plainly false.
The error stack-up from the imprecision of a phone's MEMS sensors would make positioning basically impossible after a couple of dozen feet, let alone after hours of walking around.
There are experimental inertial navigation systems that can do what you describe, but they use ultra sensitive magnetometers to detect tiny changes in the behavior of laser suspended ultra cold gas clouds that are only a few hundred atoms large. That is not inside your phone.
You seem to know a lot about this. I'm just generally fascinated by this method of tracking. Would the sensors ever become accurate enough in the future? Or is there a limit to their accuracy due to physics with a small sensor?
It will always be a matter of "for how long?". Location from integrated acceleration is what we call a stiff problem. Meaning that any error is compounded as you continue to integrate (slight over simplification, but good enough for the point). There will never be a sensor that has zero error, so it's just a question of how much integration you can do before the errors make the results unusable.
I don't think their gyroscopes are good enough for that level of inertial navigation. You could just fling it around tossing it up in the air and down again, that would totally mess with its navigation.
The far greater threat is that you just have the phone taken off you. For that reason alone you should use a burner, but I don't think you should be worried that they can track you based on gyroscope history.
Unless your device is already compromised, that information isnt being logged when the device is powered off so it's kind of moot.
"powered off"
Unless I'm holding the battery in one hand and the phone in the other I don't trust it being turned off either.
The reason it being turned off matters is because LE has a significantly more difficult time extracting data from that state. And again, a proper faraday bag prevents signal leak.
You guys are welcome to do what you want, I'm just explaining the best way to stay safe if you don't want to leave your phone at home. There are plenty of legitimate reasons someone may want one as a lifeline just in case.
My concern would be that the police would confiscate my phone. Not that they would necessarily be anything on it, but I don't want them to have my nice expensive phone. They can have this crappy cheap one instead.
Load the foam with Iranian counter interceptor malware and infect the oppressor from inside. Give them spiked ammo.
sounds good, where can we obtain it?
Any software defined radio that can transmit on these bands and RF amplifiers.
The ham radio community also has all the information on how to build them out of of basic components, power RF transistors being the most expensive components, but that is still dollars not tens of dollars.
Sometimes ready made gps jammers can be obtained off the shelf from overseas markets outside of the hegemon's reach. But active protest does require being smart about it. No point in just causing irritation with the population while leaving the enemy able to operate unencumbered. That means performing observation, OSINT, signals intelligence to understand their system and find their weaknesses.
They will have covered most vulnerabilities from their own guerilla warfare manuals so study those and find their blind spots. Find where they have become overconfident in their hardware's ability. Where they have started taking from granted technologies that remain only reliable in peacetime.
Use their systems against them
Do you have a recommendation for a good cheap android phone (didn't worry, I'll run a rom) that one could get to have a "clean" phone?
I've been thinking about getting a phone that has none of my socials on it for when I go to Canada to get vaccines
A pixel 6a is a good idea as the other commenter said but depending on what you're after you could get a fairly cheap second hand Samsung for about the same price.
That has the advantage of legitimately looking like it might actually be your phone that you've had for some time. In the same manner you could also get an old iPhone. It'll have a cracked screen because every iPhone older than 6 months has a cracked screen but the whole point is to be an unattractive decoy, you want the most average boring looking phone possible so there's nothing for them to be suspicious about.
Pixel 6 is the minimum that can load up GrapheneOS. Those are like $130 on eBay.
Pixel 8/9 does have some CPU features that help separate memory, which can be useful for keeping apps from creeping on memory they shouldn't.
when a large, trump supporter corporation, with its main business being habit and environment tracking based personalized advertising, has so deep access to your phone as it literally builfs the operating system for it, maybe it is indeed already compromised.