Your Fingerprints Are About to Reveal a Lot More About You

A new technology will allow authorities to tell whether you used drugs recently, if you're a smoker, even what sex you are—all from your fingerprints.

In 2010, a North Carolina woman was found on the side of a roadway, brutally murdered. At first the Guilford County Sheriff's Department had no suspects, but they knew from witness testimony two key facts: that the victim was last seen with a man, and that a baby seat in the back of the car had been removed during a struggle.

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