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Could a spy satellite recognise us from the way we walk?

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Could a spy satellite recognise us from the way we walk?

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http://www.telegraph.co.uk/news/worldnews/northamerica/usa/2679057/Sp… Spy satellites may soon be able to identify someone from space by looking at their shadow, using a new computer programme that analyses the way they walk. By looking at the way the person’s shadows fall on the ground, the computer then identifies them (providing the way they walk is on file) using a technique called gait analysis, which relies on the fact that it’s very difficult to disguise your walking style. Presently it’s still almost impossible to identify people from images taken from space – either because of the low quality or because the snaps tend to be of the tops of heads. Critics of the new technique suggest weather or a lack of shadow in certain conditions may hinder the process somewhat.

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