25 best movie gadgets

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Mapping drones (Prometheus, 2012)

Mapping drones (Prometheus, 2012)

Who needs GPS? Just chuck one of these handy little drones in the air and it'll use lasers to plot a map of your location. Mind you, they didn't do explorers Fifield and Millburn much good – the hapless pair still managed to get lost, despite being in constant radio contact with the Prometheus and having a map.

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