Imagine if someone could scan every image on Facebook, Twitter, and Instagram, then instantly determine where each was taken. The ability to combine this location data with information about who appears in those photos—and any Social Media contacts tied to them—would make it possible for government agencies to quickly track terrorist groups posting propaganda photos. (And, really, just about anyone else.)

That is precisely the goal of Finder, a research program of the Intelligence Advanced Research Projects Agency (IARPA), the Office of the Director of National Intelligence's dedicated research organization.

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