• matlag@sh.itjust.works
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      6 months ago

      In theory, yes, you could make a mess, and any firmware is supposed to be certified to allow the device to be used.

      In practice, this has been a convenient excuse to keep a whole chip with a separate OS in every smartphone, and it is very difficult to isolate from the rest of the system (see Graphene OS efforts).

      I say all firmware should be opensource. Whether you’re allowed to change them or not is a separate question… for now.

      • grue@lemmy.world
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        6 months ago

        Different countries regulate the radio spectrum differently, so transmitting on a certain frequency might be legal in country A but illegal in country B. They don’t bother making different radios for different countries, though; instead, they just build hardware capable of transmitting on all the frequencies and then restrict what it can do via the firmware. The argument goes, if they allow device owners to modify the firmware, then they might modify the radio to transmit illegally. Never mind that there are myriad other ways an attacker could do that, that are almost as cheap and easy…

        • vexikron@lemmy.zip
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          6 months ago

          There are easier ways to cause chaos:

          Get a cheap phone.

          Write some code to have it play, at the loudest possible volume, a pure sine wave at 18000hz to 19000hz, just outside of the range nearly all humans can consciously be aware of hearing a sound, but within the range that prolonged exposure to this sound can cause humans to become panicked, irritable, delusional, sometimes even hallucinatory, and have immense difficulty sleeping.

          Leave the phone somewhere.

          Obviously, do not actually do this.

          Probably this would be considered terrorism, and get you in about as much trouble as fucking about with your conception of what could be used as a sort of crap tier EM jammer.

          • acockworkorange@mander.xyz
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            6 months ago

            You don’t need a phone at all to do this. Or code. Or silicon. Just a cheap RC oscillator circuit tuned to that frequency and connected to a battery and a tweeter speaker.

            Edit: where’s RadioShack when you need it?

            • vexikron@lemmy.zip
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              6 months ago

              Driven out of business by the CIA and FBI to prevent this from being easily doable no doubt!

              (kidding, obviously lol)

            • Meowoem@sh.itjust.works
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              6 months ago

              AliExpress bots have probably already read this comment and put together a ‘panic inducer top quality rechargeable usb frequency tweeter for wedding, birthday, sonic warfare, corporate and special event’ which you can buy for five dollars

            • vexikron@lemmy.zip
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              6 months ago

              To the best of my knowledge,

              no, which is why I said write some code,

              And,

              it technically depends but probably most speakers for most consumer grade hardware can do this, though I do not know about optimal decibel levels at such decibel ranges to be necessary to induce the effect, relative to time, battery life, energy cost, etc.

              I will again repeat DO NOT DO THIS.

              It legitimately could be considered terrorism.

      • jpeps@lemmy.world
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        6 months ago

        In additional to the other comment, I think there’s also a traditional fear of corruption in open source. If the code is public then malicious parties are free to read and take advantage of holes in the security. Secondly it would be possible to contribute code with secret functionality that goes unnoticed. These are fairly easily debunked but seem to remain in people’s heads.

        • blackbelt352@lemmy.world
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          6 months ago

          Ugh I hate these arguments about giving bad actors easier access. Bad actors are going to figure out flaws and security holes whether it’s open source or not. Security through obfuscation is a temporary measure and having more eyes on the source means more chances for good actors to find flaws and publicize them for fixes.

  • vexikron@lemmy.zip
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    6 months ago

    Uploads thousands of open source 3d printed firearm designs

    Like this?

    (No Mr. FBI/ATF I do not actually have those)

    • BaroqueInMind@kbin.social
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      6 months ago

      Just an FYI, that’s not illegal because it falls under the U.S. Constitutional protection of free speech; so also is printing and constructing them. Selling them or distributing guns as physical products is not protected, and is in fact illegal.

      • vexikron@lemmy.zip
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        6 months ago

        Wait are you telling me it is legal to construct and possess a fully automatic firearm without a class three license?

        Or say, already own a firearm, and then construct a modification that makes it fall out of compliance with local laws by making it fully auto, having a magazine that is too large, or a bump stock or things like that?

        I am certain the situation is more complex than you seem to think, hence the semi-ironic disclaimer.

        • BrotherL0v3@lemmy.world
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          6 months ago

          While NFA items are a different story, you’re generally allowed to manufacture anything you could legally buy in a store. So no suppressors / SBRs / destructive devices without the appropriate paperwork & tax stamps, no machine guns without all that and a time machine, and no fun allowed if you’re a prohibited person. Other than that, there’s nothing* stopping you from printing, say, a semi-automatic rifle with a 16 inch barrel or a glock frame.

          *Federally. Also, I am a dumbass and not a lawyer, do your own research.

  • devilish666@lemmy.world
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    6 months ago

    The only thing i want is DIY paper printer with open source driver + DIY ink cartridges.
    It’s kinda weird to me because i can find DIY 3d printer + it’s driver (open source) online, but no company made DIY paper printer with DIY cartridges until now
    Fuck HP, Epson, Canon, or whatever big company printers out there

    • MystikIncarnate@lemmy.ca
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      6 months ago

      If such a thing exists (DIY paper printers), I would like to know more, because the level of frustration I have with all the major printer mfrs I’ve used, is too damn high.

      Bonus points if it’s a laser printer, extra bonus points if the components for the printer can be 3D printed (with obvious exceptions).

      I just want a good, wired, network printer for everyday crap that I can use once in a blue moon for stupid documents that someone wants me to print, sign, scan and send back to them because they haven’t figured out how to do e-signatures yet… And the odd extra thing I need to print. Every time I print it seems like I need to reinstall the printer or update something to make it work. I buy laser printers so the ink doesn’t dry out before I can use it. The whole thing is so damned frustrating. Also, bluntly, unless you’re doing photo work, never buy an inkjet. They’re cheap, and there’s a reason they’re cheap. Inkjet has better color representation, so photo printers should probably be inkjet, for everything else, do yourself a favor and buy a laser printer. Toner lasts much, much, longer.