At a time when everyone is worried about airline safety, the work of a little-known Cambridge University scientist could ease the public's fear. John Daugman's mathematical algorithms turn the human eye into a fingerprint. His process uses a camera to photograph the iris--the colored part of the eye--and creates a digital code based on its unique pattern. Daugman's system is extremely accurate; using 255 data points--vs. 70 for a fingerprint--it hasn't made a false match in six years of use. Indeed, iris scanners today are enhancing security at airports from Frankfurt, Germany, to Charlotte, N.C. And the British Home Office has...
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