To make it difficult for law enforcement to trace stolen cars or weapons, thieves will usually grind off their metal vehicle identification numbers or serial numbers. And while techniques for trying to recover those numbers do exist, they're not as accurate as a new method developed by researchers at the National Institute of Standards and Technology—or NIST—that uses a scanning electron microscope to detect imperfections in the metal's crystalline structure.
via Gizmodo http://ift.tt/1a6KjjU http://ift.tt/1FPwL9y
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