Comment on Babe can you refill my drink from the cloaca dispenser please?

• Swedneck@discuss.tchncs.de ⁨1⁩ ⁨hour⁩ ago

  “Video capability to promote and drive sales” quite obviously refers to the big fucking display on the thing, it can play video ads.

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• real_squids@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

  Anyone with a spectrum analyzer can see people using their earbuds, they can’t deduce any useful information from that. Several analyzers? Yea, can triangulate signals, so what. They still can’t know for sure who they belong to, since BT doesn’t transmit identifying info unless you’re pairing (aka discoverable), and even then it can be randomized.

  Also I posted in in a different comment but I’ll leave this here too.

  I can get a lot further from my phone than I’d be from the drink machine in who knows how many fast food spots before service drops.

  A typical fast food restaurant has dozens, if not hundreds of wifi and bt devices. Nothing surprising when your phone has to fight to get loud enough for your buds.

  From a quick search, bluetooth classic has 79 channels, and if there’s 2.4Ghz Wifi in use, it has 14 in damn near the same frequency range.

  If you’re worried about tracking - there are far easier ways to do that than hope your BT devices are discoverable and then try and match the (possibly randomized) device IDs to you.

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  • rc__buggy@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

    Good points, thanks

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• AnAverageSnoot@lemmy.ca ⁨1⁩ ⁨day⁩ ago

  That’s… not how Bluetooth works.

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  • real_squids@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

    Depends on the device, there was a story recently of a Nissan infotainment system that was perma-pairing as long as you had the options screen open afaik. If your earbuds are pairing close by, as is the machine - you can probably make some rudimentary motion tracking. Gonna be inaccurate as hell though, and it relies on both devices permanently being in pairing mode.

    I can get a lot further from my phone than I’d be from the drink machine in who knows how many fast food spots before service drops.

    This part though is way easier to explain with interference. A typical fast food restaurant has dozens, if not hundreds of wifi and bt devices. Nothing surprising when your phone has to fight to get loud enough for your buds.

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    • AnAverageSnoot@lemmy.ca ⁨16⁩ ⁨hours⁩ ago

      But you have to accept the pairing in the first place. Bluetooth doesn’t work without a handshake between devices. If you never use the Bluetooth feature in their app, you don’t have to worry about it. Also apparently these machines have been out since 2018…

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      • real_squids@sopuli.xyz ⁨10⁩ ⁨hours⁩ ago

        You don’t have to accept pairing, if both devices are discoverable they can see each other. It doesn’t have to be some app, you can be discoverable with 0 apps installed. That’s what I’m talking about with rudimentary tracking.

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• tyler@programming.dev ⁨1⁩ ⁨day⁩ ago

  That isn’t the one from the picture and I’ve never seen one of those in the wild. Not that they don’t exist, but the comment I replied to said “those” referring to the one in the image, which clearly doesn’t have a pinhole camera.

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