These days we have remote sensing satellites, plus sophisticated software to ana... | Hacker News

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		troymc on Sept 27, 2013 \| parent \| context \| favorite \| on: Ship crosses Northwest Passage, sails into history These days we have remote sensing satellites, plus sophisticated software to analyze their data, so it would be quite a bit more difficult to do something big and go unnoticed.

stekoz on Sept 27, 2013 | [–]

There is a reason why Geographic Information Systems (GIS) were created in Canada back in the 1970.

toomuchtodo on Sept 27, 2013 | [–]

If you rely on non-visible spectrum, its even easier. People and running equipment are going to stand out.

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