No consistent change occurs in the distinguishing texture of their irises for at least a decade
A new report* by biometric researchers at the National Institute of Standards and Technology (NIST) uses data from thousands of frequent travelers enrolled in an iris recognition program to determine that no consistent change occurs in the distinguishing texture of their irises for at least a decade. These findings inform identity program administrators on how often iris images need to be recaptured to maintain accuracy.
For decades, researchers seeking biometric identifiers other than fingerprints believed that irises were a strong biometric because their one-of-a-kind texture meets the stability and uniqueness requirements for biometrics. However, recent research has questioned that belief. A study of 217 subjects over a three-year period found that the recognition of the subjects’ irises became increasingly difficult, consistent with an aging effect.**
To learn more, NIST biometric researchers used several methods to evaluate iris stability.
Researchers first examined anonymous data from millions of transactions from NEXUS, a joint Canadian and American program used by frequent travelers to move quickly across the Canadian border. As part of NEXUS, members’ irises are enrolled into the system with an iris camera and their irises are scanned and matched to system files when they travel across the border. NIST researchers also examined a larger, but less well-controlled set of anonymous statistics collected over a six-year period.
In both large-population studies, NIST researchers found no evidence of a widespread aging effect, said Biometric Testing Project Leader Patrick Grother. A NIST computer model estimates that iris recognition of average people will typically be useable for decades after the initial enrollment.
“In our iris aging study we used a mixed effects regression model, for its ability to capture population-wide aging and individual-specific aging, and to estimate the aging rate over decades,” said Grother. “We hope these methods will be applicable to other biometric aging studies such as face aging because of their ability to represent variation across individuals who appear in a biometric system irregularly.”
NIST researchers then reanalyzed the images from the earlier studies of 217 subjects that evaluated the population-wide aspect. Those studies reported an increase in false rejection rates over time—that is, the original, enrolled images taken in the first year of the study did not match those taken later. While the rejection numbers were high, the results did not necessarily demonstrate that the iris texture itself was changing. In fact, a study by another research team identified pupil dilation as the primary cause behind the false rejection rates.*** This prompted the NIST team to consider the issue.
NIST researchers showed that dilation in the original pool of subjects increased in the second year of the test and decreased the next, but was not able to determine why. When they accounted for the dilation effect, researchers did not observe a change in the texture or aging effect. Some iris cameras normalize dilation by using shielding or by varying the illumination.
The Latest on: Biometric identifiers
- Biometrics: The safest and fastest means of identificationon June 25, 2019 at 1:37 am
Increasing safety, reducing queues and enhancing customer satisfaction: Biometric technology seemingly has it all. Here, Emmanuel Wang, VP Border Control Market and Product Offer at IDEMIA, details ... […]
- Facial biometrics deployed to more airports as surveys indicate growing supporton June 24, 2019 at 12:50 pm
Public acceptance of biometric facial recognition technology seems to be ... “Ultimately, facial recognition could serve as the only means of identification and be applied to the entire journey after ... […]
- New NEC biometrics and analytics service planned for July North America launchon June 24, 2019 at 9:51 am
The new service utilizes NEC’s existing biometric identification technology, and is part of the company’s expansion plan, which aims to increase the business related to biometrics and image analytics ... […]
- DHS building consolidated system for biometric dataon June 24, 2019 at 9:10 am
The Department of Homeland Security wants to improve the data analysis capabilities of its forthcoming cloud-based biometric identification platform. The Office of Biometric Identification Management, ... […]
- Compelled Use of Biometric Identifiers to Unlock Electronic Devices Under the Fifth Amendmenton June 24, 2019 at 8:48 am
We all know that smartphones and similar devices contain enormous quantities of personal and private information. Not surprisingly, for that reason, the government considers them a treasure trove of ... […]
- Integrated Biometrics Unveils “Danno” - Smallest, Most Affordable FBI Certified FAP 30 TFT Fingerprint Sensoron June 24, 2019 at 5:20 am
Danno’s extremely low power consumption, compact size and light weight make it the ideal solution to the growing global demand for biometric fingerprint identification. “Mobile fingerprint scanners ... […]
- TSA says biometric identification won't be mandatoryon June 20, 2019 at 11:36 am
Washington (CNN)The Transportation Security Administration said Thursday that it has no plans to make biometric identity-verification mandatory, although the agency continues to study and pilot ... […]
- The U.S. will store biometric data on over 250 million people on Amazon Cloudon June 20, 2019 at 3:25 am
... years the U.S. Department of Homeland Security has used a legacy biometric analysis platform called Automated Biometric Identification System, or IDENT, to store and sort through biometric and ... […]
- NEC Fingerprint Identification Contributes to the Provision of Legal Identity for Newborn Children in Developing Countrieson June 19, 2019 at 11:32 pm
The ability to collect and authenticate biometric information at an early age enables authorities to provide legal identity, including birth registration, for newborn children, ensures proper ... […]
- DHS pushes on centralizing access to biometric dataon June 19, 2019 at 3:02 pm
including its legacy biometric identification system, IDENT, and its replacement, the Homeland Advanced Recognition Technology System. HART will be moved to an Amazon Web Services cloud certified ... […]
via Google News and Bing News