Changes in patterns in the eye cast doubt on biometric scans

摘要

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.