© David Last AVCIS-IATTI Annual Conference Loughborough University 24 September 2014 GPS Tracking Evidence - Handle with Care! Professor David Last Picture: earthobservatory.nasa. gov//ewsroom/BlueMarble/
© David Last Pictures: GPS The Global Positioning System
© David Last TomTom Car Navigator GPS receiver + Computer Picture:
© David Last List of addresses extracted from TomTom car navigator
© David Last Plot of addresses extracted from TomTom car navigator
© David Last Picture:
© David Last Picture: Audi Bedienungsanleitung englisch
© David Last 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
© David Last
experts-making-the-most-of-gps-evidence/
© David Last
GPS Tracking Evidence comes from: Law enforcement covert operations Employers Commercial tracking companies Motor insurance companies Criminals Pictures:
© David Last How accurate is it, then? Pictures: dreamtimes “95% of GPS position measurements will lie within 5 metres of the true position”
© David Last GPS Tracking System on Vehicle
© David Last GPS Tracker using Text Messaging Pictures: GPS Data Logger
© David Last
GPS Tracking Record
© David Last GPS Tracking Record Raw data: Data received:
© David Last GPS Tracking Record Raw data: Data received:
© David Last GPS Tracking Record Raw data: Data received:
© David Last GPS Tracking Record Raw data: Latitude N Longitude W Data received: Latitude N Longitude W
© David Last GPS Tracking Record Raw data: Latitude N Longitude W [World Geodetic System 1984 (WGS84) datum]
© David Last
© David Last AVCIS-IATTI Annual Conference Loughborough University 24 September 2014 GPS Tracking Evidence - Handle with Care! Professor David Last Picture: earthobservatory.nasa. gov//ewsroom/BlueMarble/