Salamander

  • 2 Posts
  • 34 Comments
Joined 3 years ago
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Cake day: December 19th, 2021

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  • If the timing is right, I would bring a mushroom grow bag with mushrooms sprouting.

    If not… probably my radiacode gamma spectrometer and some of my radioactive items. Maybe a clock with radium painted dials and a piece of trinitite. I think that there are many different points of discussion that can be of interest to a broad audience (radioactivity, spectroscopy, electronics, US labor law story of the radium girls, nuclear explosions, background radiation… etc). As a bonus I can bring a UV flash light and show the radium fluorescence. Adults love UV flash lights.



  • Thank you for the positivity 💚 I wholeheartedly agree!

    Drama and negativity drives engagement, and this form of engagement can easily trigger a feedback loop in which negativity keeps piling on and voices of support are practically muted.

    We are participating in an open source project that has some very ambitious goals. Things can be messy, mistakes happen, there are risks, and people have many different opinions and moods. Heated discussions can be a healthy part of the process. But, once the dust is allowed to settle for a bit, it is good to remember that we are humans and that we are here because we have some shared goals.

    I think the majority of people around here are kind and have a positive outlook, but perhaps it is more motivating to speak out when we have negative comments than positive ones. So, thank you for taking the time to write this positive message!


  • I am also quite interested in this. It is not something that keeps me awake at night, and I am not particularly paranoid about it. But I find that working towards answering this question is a fun frame from which to learn about electronics, radio communications, and networking.

    Since this appears to be something that is causing you some anxiety, I think it is better if I start by giving you some reassurance in that I have not yet managed to prove that any electronic device is spying on me via a hidden chip. I don’t think it is worth being paranoid about this.

    I can explain some things that could be done to test whether a Linux computer spying. I am not suggesting that you try any of this. I am explaining this to you so that you can get some reassurance in the fact that, if devices were spying on us in this manner, it is likely that someone would have noticed by now.

    The “spy” chip needs some way to communicate. One way a chip might communicate is via radio waves. So, the first step would be to remove the WiFi and Bluetooth dongles and any other pieces of hardware that may emit radio waves during normal operation. There is a tool called a “Spectrum Analyzer” that can be used to capture the presence of specific radio frequencies. These devices are now relatively affordable, like the tinySA, which can measure the presence of radio frequencies of up to 6 GHz.

    One can make a Faraday cage, for example, by wrapping the PC with a copper-nickel coated polyester fabric to isolate the PC from the radio waves that are coming from the environment. The spectrum analyzer antennas can be placed right next to the PC and the device is left to measure continuously over several days. A script can monitor the output and keep a record of any RF signals.

    Since phones are small, it is even easier to wrap them in the copper-nickel polyester fabric alongside with the spectrum analyzer antenna to check whether they emit any RF when they are off or in airplane mode with the WiFi and Bluetooth turned off.

    What this experiment may allow you to conclude is that the spy chip is not communicating frequently with the external world via radio frequencies, at least not with frequencies <= 6 GHz.

    Using frequencies higher 6 GHz for a low-power chip is not going be an effective method of transmitting a signal very far away. The chip could remain hidden and only emit the signal under certain rare conditions, or in response to a trigger. We can’t rule that out with this experiment, but it is unlikely.

    A next step would be to test a wired connection. It could be that the spy chip can transmit the data over the internet. One can place a VPN Gateway in between their PC and the router, and use that gateway to route all the traffic to their own server using WireGuard. All network packets that leave through the PC’s ethernet connection can be captured and examined this way using Wireshark or tcpdump.

    If one can show that the device is not secretly communicating via RF nor via the internet, I think it is unlikely that the device is spying on them.


  • I am not sure as I did not test this one. Maybe you can go in person and get a worker to get you access to the kiosk through your account to print the card. It is one of those massive chains with gyms in every corner. I think that by now they rely on their digital infrastructure and many of their workers are not trained to handle uncommon situations. At least I get that from some of my experiences, but I could be wrong, maybe if I would have called them could have helped me with this. It was just easier to get the app into my old phone, print a card, delete the app.


  • I think that it works, but for it to work you need to enable Google Play services. From what I understand, this is done in a sandboxed manner simulating a fake identity, so it is possible to do this while isolating Google from your phone to an extent. But I think that WhatsApp is in itself problematic and one of the direct offenders that I want to avoid, regardless of its reliance on Google Play services, and so I have not gone through this effort myself.


  • I made the switch when I got a new phone. So I kept both the old phone with android and the new phone with GrapheneOS. There was a transition period when I would bring both phones with me, just in case. Now my old phone is my “whatsapp” phone which I keep at home and turn on rarely. During the transition period I used my old phone number whenever I needed to provide my phone to use a service, but eventually I transitioned that to a VoIP. But, even then, many services will reject VoIP phone numbers, so I still make use of the old one.

    I had to request a special scanner from my bank because the banking apps do not work with GrapheneOS. And I had to make sure that nothing important goes into my gmail anymore because google would request that I used my old phone 2FA in the most inconvenient moments, and also I don’t want to access google from my GrapheneOS phone.

    I think that there are many annoyances that can and probably will happen if you try to jump right into GrapheneOS after having previously relied in the google/meta ecosystem. If you attempt to switch too quickly you might inadvertently lose access to your bank, and you might become suddenly unable to communicate with family and friends. My government’s online identification system requires that I use their app, which runs on google services, so I still have to use my old phone for that. And I have encountered situations in which the only reasonably convenient way to proceed is to download an app. For example, recently I registered for a gym that would then require me to use their google-store app so that I could identify myself when purchasing a physical card.