Thread

1. drnick1 · 1790270806 · focus · HN ↗

   I started rotating my BSSID weekly after I learned Apple and Google abused it to track the location of people and devices.

   Permanent hardware or software IDs, such as the Windows GUID or machine-id on Linux (systemd) are inevitably abused for surveillance sooner or later.

   1. astrange · 1790284550 · focus · HN ↗

      You mean, they used it so people trying to use their maps apps didn't have to wait several minutes for a cold GPS fix?

      1. gpm · 1790297927 · focus · HN ↗

         > wait several minutes for a cold GPS fix

         My phone doesn't take several minutes to get a GPS fix even when I'm in the middle of nowhere well beyond the range of cell towers let alone wifi routers...

         I understand that in theory it could if it had no clue what time it was either for some reason... but in practice we're talking seconds (though more than 2) not minutes.

         1. Fabricio20 · 1790299124 · focus · HN ↗

            I feel like that's not a true cold GPS signal! Though I'm not arguing the parents scenario is realistic either. I got a GPS module for a drone I was building and it took 20 minutes to get a proper GPS lock from cold!!! I was sitting there watching betaflight doing it's thing wondering why the heck it takes so long when there's so many satellites in view!

            1. 05 · 1790327465 · focus · HN ↗

               20minutes just means a shitty module or lots of ~1.3ghz noise (e.g. from dji o3/o4 or gopro cpu), although bad input filtering and gps located near an antenna could saturate the amplifier even with antenna on a different frequency. 1min is typical for cold fixes but you can make it faster by uploading ephemeris/cache using AssistNow (valid for about a month).

Unofficial Hacker News client; not affiliated with Y Combinator.