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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. SwiftOnSecurity‏ @SwiftOnSecurity Mar 29

      SwiftOnSecurity Retweeted Yeyo

      In theory you could go back to around ~1992 and still make calls/SMS. You can't backdate the clock so I don't know. Not sure if iPhone can do 90s degraded resolution civilian GPS. You'd also need SIM cutter and I'm not sure how those standards have changed over years. Followers?https://twitter.com/DANGEROUS_media/status/979359662758858758 …

      SwiftOnSecurity added,

      Yeyo @YeyoZa
      Replying to @SwiftOnSecurity
      Hey Swift, a random question that could make an interesting tweet-thread: if I took an iPhone back in time to before the iPhone was made, which features would work? Would maps/GPS work? Could I send an SMS? How far back in time would it work, etc.?
      45 replies 25 retweets 128 likes
      Show this thread
    2. Hector Martin‏ @marcan42 Mar 29
      Replying to @SwiftOnSecurity

      GPS and GSM should work fine, given a suitable SIM. Cutting SIMs is easy and I don't see why it would be any harder with a vintage SIM. SMS should work fine. Not sure if the iPhone supports retro style CSD data (pre GPRS) though. You might be stuck without any Internet access.

      7 replies 3 retweets 18 likes
    3. Joe Desbonnet‏ @JoeDesbonnet Mar 29
      Replying to @marcan42 @SwiftOnSecurity

      I'd be concerned about the GPS Week number field in the GPS data stream. That rolled over since the 90s. Prob wouldn't change location fix, but GPS derived time would be (very) wrong.

      2 replies 1 retweet 12 likes
      Rich Felker‏ @RichFelker Mar 29
      Replying to @JoeDesbonnet @marcan42 @SwiftOnSecurity

      I would assume a device with GSM gets the approximate date off the cellular network as a starting point for GPS search and a basis for interpreting the week number, no?

      8:39 AM - 29 Mar 2018
      1 reply 0 retweets 0 likes
        1. Rich M(uahahaha)  📶‏ @Rich____M Mar 29
          Replying to @RichFelker @JoeDesbonnet and

          It should. Can't speak for iPhone, but android has apps that let you reset AGPS buffer and force a cold or warm GPS restart. It just needs one sat to get a time signal and rebuild internal "map".

          0 replies 0 retweets 0 likes
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