By Sandra Swanson, Technology Review
Scanning prints at two meters could mean safer security checks. Over the years, fingerprinting has evolved from an inky mess to pressing fingers on sensor screens to even a few touch-free systems that work at a short distance. Now a company has developed a prototype of a device that can scan fingerprints from up to two meters away, an approach that could prove especially useful at security checkpoints. The device, called AIRprint, is being developed by Advanced Optical Systems (AOS). It detects fingerprints by shining polarized light onto a person’s hand and analyzing the reflection using two cameras configured to detect different polarizations.
http://technologyreview.com/biomedicine/27052/?p1=MstRcnt
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