First came the post-Sept. 11 rush for biometrics -- the science of using faces, fingerprints and irises to identify people. Then the disappointing lull. Now, biometric technologies are finally starting to provide a layer of security at government and business facilities across the country.Once at a near-standstill, biometrics' pace of adoption has quickened to a slow trot, as prices for the systems have dropped, standards have been agreed upon and public comfort with the technology has risen. But a full gallop toward biometrics won't happen, experts said, until costs fall further, reliability improves and privacy protections are put in place.Read more about biometric security measures at the Marines' Pacific headquarters, a New Jersey school, and at the Illinois DMV in my article for the Chicago Tribune.

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