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Decoding GPS

Discussion of forensic issues related to all types of mobile phones and underlying technologies (GSM, GPRS, UMTS/3G, HSDPA, LTE, Bluetooth etc.)
Subforums: Mobile Telephone Case Law
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Re: Decoding GPS

Post Posted: Tue Jul 10, 2018 7:25 am

That works - Thankyou

Does anyone know if GPS & date informaiton is stored in the cityhistory_v4.sav file - Ive seen differect layouts from difference sat nav manufacturers which I would not have expected.  

nsbuck
Senior Member
 
 
  

Re: Decoding GPS

Post Posted: Fri Jul 13, 2018 4:19 am

I can confirm that the 2^23 thing features in many files from iGo/NNG navigation software.

As for cityhistory, I've seen multiple versions of that file too, but it has been a few years. From what I recall there are no co-ordinates, but there is a timestamp (32 bit LE, Unix) near each city record. I couldn't tell you the significance of the timestamp off the top of my head though.
_________________
Arun Prasannan
CCL-Forensics Ltd. 

polar
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