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Discussion
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@evacide That's why you pull out the batteries and sim or not even take the burner phone with you. If you bring a phone at all...
@evacide i mean duh. Triangulation via cell towers is trivial. Ideally youd wanna not use a "cell" phone at all, or at least one where you flash firmware onto it, i.e. make a full zeroed out ism.img and flash it so it doesnt work :P
bbuuut, yeah, breaking a phone that aint cheap aint fun either way..
Id recommend for proper out-and-about. encrypted radios. Now, certain "ham" frequencies dont allow encryption and if you get caught using it, theyll just pin that extra on you.
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@hanscees
It depends.
The radio packages are very small and don't take much time. However, it depends how they are distributed. In #meshcore only repeaters... erm... repeat a message, so if you bring one or two repeaters to the event then it's just that short signal for a short time in the air, even in flooded transport types like talking in a "channel". If you talk end-to-end between two clients, the routing would even optimize to only involve repeaters along the way (after it found out that route via flooding at first time).
So all in all, meshcore has a chance to support large groups in one close area, in contrast to other more flood-focused approaches.
It is nevertheless still not bullet-proof: it can be DoS'ed quite easily, you never know how good agencies can decypher the cryptograpy, and also the routing might still not scale endlessly.
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@voyagermesh @yama @evacide People have short fuses these days, well considering the stress it's logical.
In general however, #meshcore could work in a crowd. But if there are many participants, as in thousands, and constantly sending I would presume it will meltdown just like SMS and WhatsApp does in crowds.
I know of no information of people that have tried that however. But since you can re-name a device everyday, you would have a perfect burner phone. It's also encrypted, but probably not so good that Cia couldn't decrypt.
But it's certainly worth a shot trying in practice.
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There are other reasons you might want to take a cheap/disposable/burner phone to a protest, such as making sure that if you are arrested, the police don't seize/break/confiscate your main phone.
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But if it is important to you to maintain your anonymity at a protest, consider leaving your phone at home, or at least turning it on/off only once you are well out of the neighborhood.
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There is no one-size-fits-all solution for digital safety at protests. You need to decide in advance what your goals are, what is important for you to protect, and what is likely to happen to you, and threat model accordingly.