It can -- but the better question might be: Is it something that could be used against you? The technology does exist to use a sample to create a sketch of a person's face, but there are doubts about its accuracy, and how much value it provides.

But that hasn't stopped police from taking these sketches and running them through facial recognition software. Searching for ... someone who looks like the a drawing a computer made when it was given your DNA? Welcome to the next level of investigative technology. As you might imagine, the experts have concerns...

GUEST: Dhruv Mehrotra, staff writer at WIRED

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