I'm a bit torn about this: The historian in me thinks this is really cool, but the privacy guy is a bit nervous about the development of this technology.
Historians are trying to deal with sixteen thousand bags of shredded documents from the repressive East German regime. They are testing a pilot project with technology that will scan and automagically assemble the billions of pieces.
See: Puzzling Together the Past: New Computer Program to Reassemble Shredded Stasi Files - International - SPIEGEL ONLINE - News. Thanks to the Lazy Genius for the link (The Lazy Genius :: New Computer Program to Reassemble Shredded Stasi Files).