© David Last Digital Forensics Conference Forensics Expo Europe 2014 30 April 2014 Maximising the Potential of GPS Evidence Professor David Last Picture: earthobservatory.nasa. gov//ewsroom/ BlueMarble/
© David Last Digital Forensics Conference Forensics Expo Europe 2014 30 April 2014 Maximising the Potential of GPS Evidence Professor David Last Picture:
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© David Last
Digital Forensics ConferenceForensics Expo Europe 2014
30 April 2014
Maximising the Potentialof GPS Evidence
Professor David Last
Picture: earthobservatory.nasa.gov//ewsroom/BlueMarble/
© David Last
Pictures: www.garmin.com,www.bbc.co.uk/news
GPSThe Global Positioning System
© David Last
TomTom Car NavigatorGPS receiver + Computer
Picture: www.tomtom.com
© David Last
List of addresses extracted from TomTom car navigator
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Plot of addresses extracted from TomTom car navigator
© David Last
Picture: www.paraben.com, www.msb.com, www.forensicnavigation.com, www.blackthorn2.com, www.cellebrite.com
© David Last
Picture: Audi Bedienungsanleitung englisch 1.05 254.562.742.20
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Quality of evidence from satellite navigators
At its worst …
Nevertheless…
• List of addresses, but …• No identity, no times or dates• No route, no evidence of visit• No specific vehicle
• Powerful leads• Linked to other evidence
© David Last
Quality of evidence from satellite navigators
At its best …• Name and home address• Addresses in order, favourites• Language and preferences• Telephone numbers and calls
and possibly ….• Multiple timed and dated tracks
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© David Last
© David Last
http://articles.forensicfocus.com/2012/08/27/computer-analysts-and-experts-making-the-most-of-gps-evidence/
© David Last
© David Last
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GPS Tracking Evidence comes from:•Law enforcement covert operations•Employers•Commercial tracking companies•Motor insurance companies•Criminals
Pictures: www.vehicletrackingltd.co.uk, www.olmc.eu,blogs.guardian.co.uk
© David Last
How accurate is it, then?
Pictures: www.gral-gju.org/examples.php, dreamtimes
“95% of GPS position measurements willlie within 5 metres of the true position”
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GPS Tracking System on Vehicle
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GPS Tracker usingText Messaging
Pictures: www.amazon.co.uk, www.conrad-uk.com
GPS DataLogger
© David Last
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GPS Tracking Record
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GPS Tracking Record
Raw data:
Data received:
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GPS Tracking Record
Raw data:
Data received:
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GPS Tracking Record
Raw data:
Data received:
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GPS Tracking Record
Raw data: Latitude 53.21476N Longitude 4.15263WData received: Latitude 53.214 N Longitude 4.152 W
© David Last
GPS Tracking Record
Raw data: Latitude 53.21476N Longitude 4.15263W [World Geodetic System 1984 (WGS84) datum]
© David Last
© David Last
http://www.professordavidlast.co.uk/cms_items/f20131120085500.pdf
© David Last
Digital Forensics ConferenceForensics Expo Europe 2014
30 April 2014
Maximising the Potentialof GPS Evidence
Professor David Last
Picture: earthobservatory.nasa.gov//ewsroom/BlueMarble/
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