Researchers say nose an accurate biometric indicator; could join fingerprint, iris scanning

Nose scans could be a better method of identification than using iris or fingerprint scanning alone, according to a new study.

Researchers from the University of Bath (U.K.) say noses, which can be scanned in three-dimensions and mapped using measurements for its tip, ridge profile and "nasion" (area between the eyes), have been underrated in the field of biometrics.

In the study, the researchers used a photographic system called PhotoFace to scan in three-dimensions the shape of 40 volunteers' noses. (PhotoFace was originally developed by researchers at the University of the West of England and Imperial College London.)

Their analysis revealed six distinct nose shapes: Roman, Greek, Nubian, Hawk, Snub and Turn-up.

According to the scientists, noses are harder to conceal and remain relatively unchanged during facial expression. Though irises are more accurate, eyelids or glasses make them difficult to capture.

The scientists were quick to note that

There's no one magic biometric – irises are a powerful biometric, but can be difficult to capture accurately and can easily be obscured by eyelids or glasses," said Bath researcher Adrian Evans in a statement. "Noses, however, are much easier to photograph and are harder to conceal, so a system that recognises noses would work better with an uncooperative subject or for covert surveillance."

The researchers have since expanded their database to 160 people and are working to see if their software can distinguish between relatives or pick people from a large group.

If successful, the technique could be used in conjunction with existing biometric indicators for more accurate identification.

This post was originally published on Smartplanet.com