(CNET) — The use of drones is taking off in America.
Local governments and private businesses see them as a cheap and effective way of maintaining an eye from the sky.
But will the drones be fully under their control?
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A college professor and his students say not necessarily.
A civilian drone aircraft was "hijacked" by Professor Todd Humphreys and his graduate students at the University of Texas at Austin.
They were able to hack into the drone's GPS signals.