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[Content Warning: Violence] Police opens fire on protesters in Tehranpars district. Internet is down. Phone networks are down. The video comes from Starlink (cdn.imgchest.com)
submitted 10 months ago by to c/crazyfuckingvideos@lemmy.world
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[–] 14 points 10 months ago (5 children)

I'd encourage anybody thinking about protesting to check out Meshtastic. You can get a basic device for less than $25. Connect to your phone with bluetooth, and you can communicate with anyone nearby with encryption without using the internet.

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  • [–] 7 points 10 months ago (4 children)

    Don’t take your phone to a protest. Even if you turn it off or in airplane mode. iPhones ping the Find My network even when turned off for instance and Google has their own version of the same thing. Feature phones, insofar as they still exist won’t save you either, in the US all cellular devices are required to have a GPS built in (it was part of the same law that made the Amber Alert).

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  • [–] 4 points 10 months ago* (last edited 10 months ago) (1 child)

    There are also standalone Meshtastic devices that don’t require your phone as a medium, but obviously they’re far less intuitive than an app.

    Would it be still too risky to take an old phone that no longer has a SIM, running a custom ROM, and only tethered to one of these? Or would the Bluetooth still be too traceable?

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  • [–] 2 points 10 months ago

    No SIM wouldn’t really make any difference, all (US) phones must be able to make a 911 call even if they aren’t currently in service (that’s what SOS in the signal meter means too, you aren’t roaming or don’t have roaming turned on but the rival carrier’s tower that you are hitting legally must allow you to make a 911 call). Just because your carrier doesn’t support those frequencies anymore doesn’t mean there aren’t other carriers that do or that the mobile cell tower spoofers won’t still scan for those frequencies. If you trust that it will stay in airplane mode and that the custom rom’s Bluetooth stack is locked down enough to not ping any Find My devices or similar then maybe but standalone Meshtastic device sounds like the best bet to me, or maybe something like IP over HAM radio. Maybe it’s time to dust off the Cybiko!!!

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  • [–] 1 point 10 months ago (1 child)

    What about a phone running Graphene OS in an anti-static bag?

    Or what about a Pinephone with the hardware switch for the cellular modem turned off?

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  • [–] 6 points 10 months ago

    An anti-static bag wouldn’t do anything. I assume you mean the Faraday cage bags, which would prevent your phone from pinging anything as would a hardware switch but wouldn’t prevent them from searching it if you get arrested.

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