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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. eduo‏ @eduo 9 Aug 2017
      Replying to @dimitribouniol

      Wish it was only chargers: http://www.ebay.es/itm/GSM-SIM-Espia-Oculto-audio-voz-Escucha-bug-usb-2-0A-a-USB-Cargador-Datos-Cable-/322620757483?hash=item4b1db215eb:g:AbkAAOSwzT5ZecLv … - That's a USB Cable with SIM and GPS

      1 reply 5 retweets 9 likes
    2. Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @eduo @dimitribouniol

      Unlikely gps at that price, but maybe? Likely just cell tower based location.

      1 reply 0 retweets 0 likes
    3. eduo‏ @eduo 9 Aug 2017
      Replying to @RichFelker @dimitribouniol

      GPS chips cost cents. Before I shared news from 2007 where GPS chips had a price of $5.

      1 reply 0 retweets 0 likes
    4. Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @eduo @dimitribouniol

      Ones that actually work?

      1 reply 0 retweets 0 likes
    5. eduo‏ @eduo 9 Aug 2017
      Replying to @RichFelker @dimitribouniol

      What does this mean? These don't work?

      1 reply 0 retweets 0 likes
    6. Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @eduo @dimitribouniol

      Not sure. But getting a gps fix with no assist, tiny antenna, and not much computing power doesn't sound plausible.

      1 reply 0 retweets 0 likes
    7. Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @RichFelker @eduo @dimitribouniol

      I never got a working gps fix with cheap Chinese Android phones even. Only high end ones.

      1 reply 0 retweets 0 likes
    8. eduo‏ @eduo 9 Aug 2017
      Replying to @RichFelker @dimitribouniol

      This is unrelated to the chips and has more to do with bad design (the biggest factor in GPS). Computing power needed is trivial as well.

      1 reply 0 retweets 0 likes
    9. Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @eduo @dimitribouniol

      Now I'm curious how cheap GPS receivers work, since I'm only (somewhat) familiar with the workings of high-precision stuff.

      3 replies 0 retweets 0 likes
    10. eduo‏ @eduo 9 Aug 2017
      Replying to @RichFelker @dimitribouniol

      Especially simple for devices that won't be moving about a lot (like a plug charger) that compensate immediate inaccuracy over hours.

      1 reply 0 retweets 0 likes
      Rich Felker‏ @RichFelker 9 Aug 2017
      Replying to @eduo @dimitribouniol

      A tracking device that only works when someone leaves it plugged in several hours seems like it would have limited usefulness...

      11:42 AM - 9 Aug 2017
      2 replies 0 retweets 0 likes
        1. New conversation
        2. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          One of the safer assumptions on a USB charger is that it'll be connected for a while when used. Necessary since it'll be indoors anyway.

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          I don't think so. Lots of ppl just charge enough to use, & newish phones charge FAST (~30min for 15% to 90%).

          1 reply 0 retweets 0 likes
        4. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          Yet, as you know, the vast majority plug more than half and hour most of the time. Again, not sure what you're arguing here any more. Sorry.

          1 reply 0 retweets 0 likes
        5. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          I'm not either. I started off skeptical that they did anything at all, then curious about how cheap receivers are implemented...

          2 replies 0 retweets 0 likes
        6. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @RichFelker @eduo @dimitribouniol

          I'll believe you that they exist, but I'm still skeptical that the devices perform acceptably for what people would buy them for.

          1 reply 0 retweets 0 likes
        7. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          9 bucks. Buy one. Test it yourself. Report back.

          1 reply 0 retweets 0 likes
        8. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          I work with ones much more expensive than that.

          1 reply 0 retweets 0 likes
        9. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          So do I, but that's also irrelevant because these are the ones we're talking about and the ones you're skeptical about.

          1 reply 0 retweets 0 likes
        10. 1 more reply
        1. New conversation
        2. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          You're talking about it as if we were not seeing twenty variants of it for sale. As if it was hypothetical :) It's right there.

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          I'm skeptical that they work as advertised, especially the cheap ones.

          2 replies 0 retweets 0 likes
        4. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @RichFelker @eduo @dimitribouniol

          Businesses that market to stalkers are not known for ethical advertising.

          2 replies 0 retweets 0 likes
        5. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          It's advertising what the basic functionality for any GPS plugged into a wall indoors at least 1 hr while would've (*any*, as it's basic)

          1 reply 0 retweets 0 likes
        6. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          Average person's conception is that GPS gets a fix in <5sec like their phone does. Not after hours of waiting.

          1 reply 0 retweets 0 likes
        7. eduo‏ @eduo 9 Aug 2017
          Replying to @RichFelker @dimitribouniol

          Average person's conception of GPS is irrelevant for a tracking device planted on a wall charger, though.

          1 reply 0 retweets 0 likes
        8. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @eduo @dimitribouniol

          It can tell you where your target spends the night, which is surely one usage case the intended market would be interested in.

          1 reply 0 retweets 0 likes
        9. Rich Felker‏ @RichFelker 9 Aug 2017
          Replying to @RichFelker @eduo @dimitribouniol

          But it probably can't tell you where they plugged in at a coffee shop for a quick charge or where they're sitting in the airport.

          1 reply 0 retweets 0 likes
        10. 1 more reply

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