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Technology

Ageing irises could confound biometric checks

By Duncan Graham-Rowe

28 July 2010

Âé¶¹´«Ã½. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

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(Image: Ian Waldie/Getty)

A BIOMETRIC trait is not just unique, it is also for life. That is one of the claims often made for biometric-based security systems like iris recognition. Now it appears that iris scans can produce subtly different patterns over time, so the older the image of a person’s iris stored on a computer, the more likely that the system will fail to match it to a new scan of their iris.

“The older the stored image of someone’s iris, the more likely the system will fail to match it to a new scan”…

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