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GPS do have its problems...
(h/t to
ExRAFRadar)
"American researchers took control of a flying drone by "hacking" into its GPS system - acting on a $1,000 (£640) dare from the US Department of Homeland Security (DHS).
A University of Texas at Austin team used "spoofing" - a technique where the drone mistakes the signal from hackers for the one sent from GPS satellites.
The same method may have been used to..." continues -
BBC News - Researchers use spoofing to 'hack' into a flying drone
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