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Cake day: June 8th, 2023

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  • How much (metal, refined, produced on earth) wire would you say is required to produce an air (actually vacuum, but we know air core really well so there’s math for them) core electromagnet which can generate a field capable of deflecting solar wind over the area of its pv array? In order to maintain that field strength, how much current is required? Can it be supplied by a pv array equal in area to the effective field area? How many of those are needed to cover the area of mars?

    That’s-a lotta metal!

    Also speaking as a person who deals with e-waste daily, it’s both by volume and mass composed of petroleum products. Fiberglass is reenforced plastic. Ics are 90% plastic by volume. Discrete components are made of petroleum distillates in a lot of cases and encased in them in even more cases!

    Even if you only considered the boards as the e-waste and not the plastic cases and bodies themselves, those dont exist in a vacuum like our hypothetical electromagnets, a reduction in printer boards means fewer printers which are almost completely just plastic.


  • The scale of what you just described is really goofy.

    It’s also a very delicate shield against a very serious problem.

    I don’t think it’s feasible to protect a mars-diameter disc of massive magnets from damage by either normal objects traveling through the area or from some human engineered attack.

    If you’re imagining the capacity to create such an emplacement, don’t you imagine that such phenomenal effort and wealth of resources would be better spent solving some terrestrial problem?

    There’s a real difference between e-waste, which is mostly byproducts of the petroleum refining process with electronic components smeared liberally on, many of which rely on petroleum byproducts themselves and electromagnets, which are, at the scale you’re discussing, massive chunks of metals refined, shaped and organized into configurations that will create magnetic fields when dc is present.

    I have a hard time imagining a level of focus required to bridge that gap.









  • I guess a person could claim mdm is spyware, but by extension group policy and maybe even selinux would fall in the same category.

    It’s worth keeping in mind that the distinction is made in comparison to actual software separate from the os that is being used to keep tabs on the device location and gate access to hardware. Possibly one of the most literal types of spyware I’ve ever seen.

    We should also recognize that Samsung isn’t shipping fully open stock roms and the open or closed source nature of software coming from a company headquartered in an ally’s territory doesn’t matter near as much as their military presence on rok soil.


  • Their security concern is that iPhones won’t let a third party app take control of phone capabilities at a very low level. They want to use an in-house app to stop people from recording audio or video based I assume from the article on geofencing.

    The way you’d do that with iPhones is most likely through mdm.

    It’s not that iPhones aren’t secure, it’s that the rok military can’t control them with its spyware.

    Reading between the lines, it’s not like no one knows that. It’s a good opportunity to gently suggest people working in high security positions (who make higher grade salaries on average!) ditch their iPhones for Samsung models. No need to run a mdm shop and you juice a national company.


  • SEOUL - South Korea’s military is considering a comprehensive ban on iPhones in military buildings due to increasing concerns about possible leaks of sensitive information through voice recordings, according to multiple sources on April 23.

    The sources, a group of ranking officers who wished to speak on condition of anonymity, said that the Air Force headquarters released an internal announcement on the military’s intranet server on April 11, instructing a complete prohibition on any device capable of voice recording and which does not permit third-party apps to control inherent functions, effective June 1, with iPhones cited as items subject to the ban.

    According to the document, the decision to ban iPhones in the military came from joint meetings held by the headquarters of the army, navy and air force, located at Gyeryongdae in South Chungcheong province.

    The document was quoted as stating: “It’s inevitable to block any kind of voice recording, not just formal communications including meetings, office conversations, business announcements and complaints from and consultations with the public, but also informal communications such as private phone calls (within military buildings).”

    According to the document, “there has been an ongoing review regarding the potential extension of this ban to all subordinate units”, with the army headquarters having conducted a trial of the ban since April. If the ban is extended, it will likely go beyond the Gyeryongdae area to include all other units across the nation.

    The devices set to be prohibited include all types of smartwatches and wearable devices as well.

    Currently, about 10,000 personnel, including some 6,000 officers, are estimated to be on duty at the Gyeryongdae defence centre alone. For security reasons, the exact number is not disclosed to the public.

    The specific type of security threat they’re talking about is the threat of “our in-house software can’t control iphones”.

    I may be misremembering, but under ios I think that goal is accomplished with mdm instead of an app?