Are They Selling Your Face?

Biometric devices that scan faces, hands, or eyes are spreading--and raising thorny privacy issues

Thanks to the wonders of technology, your face is becoming unforgettable. Literally. Just ask Edward Jensen, a traveling salesman who stopped at a Texaco station recently near Arlington, Tex., 200 miles away from his home, to cash a paycheck. At this gas station, his face was known--by a machine.

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