We all know Signal, Matrix, Telegram, SimpleX, etc… But if you can’t access the internet you can’t communicate. Pretty logic. But would it be possible, at least theoretically, to create an app that permits to message people even if the internet goes down?

It might be a dumb question I really have no idea to be honest.

  • The Rizzler@feddit.org
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    8 months ago

    scratch telegram off that list, put Session messenger there instead.

    Telegram isn’t private, one guy has the master key to the whole thing

    • Ju135@lemmings.worldOP
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      8 months ago

      Yeah to be honest I don’t even know how telegram became so popular in the “privacy-oriented world”

  • root@lemmy.world
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    8 months ago

    Meshtastic can be encrypted and is LoRa based. Can easily hit nodes dozens of miles away with a good line of sight. It also relays messages across nodes to reach even further distances.

  • Gayhitler@lemmy.ml
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    8 months ago

    It’s not p2p but at least many years ago:

    SMS.

    If the Internet outage is local then the towers would still work and you’d be able to get texts. I went through a few storms where wired home internet was down, the towers weren’t giving me a data connection (no mobile web browsing or anything), but I was able to send and receive texts.

    If you really care about what you’re asking after, do what someone else said and get a radio license. It’s 150 year old technology and every time something happens radio operators pop up some kind of emergency communications or bridge to the internet through repeaters or something.

  • QuazarOmega@lemy.lol
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    8 months ago

    Besides the already mentioned Briar, there’s Berty, can’t speak to its quality since I never used it, but I always found the project neat in and of itself

    • Ju135@lemmings.worldOP
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      8 months ago

      I found Berty yesterday just after making this post. But as a neophyte in cryptography and everything, how am I supposed to know which one is better for my privacy ? (e.g. between Briar and Berty) Because right now the only thing that I have is what the apps are “telling” me so… Yeah I don’t know how to chose.