Advances in 3D fingerprint scanning technology are giving rise to smaller, more affordable 3D contactless fingerprinting systems. A team at Hong Kong Polytechnic University (PolyU) has developed a new desktop system for 3D fingerprint identification with high accuracy, quick processing (about 2 seconds), and comparatively low cost (up to $780) compared to current commercially used 3D systems.
2D fingerprinting, the current standard, is subject to a certain degree of inaccuracy due to partial prints or distortion from blurring or smearing that can occur when fingers are pressed against a hard surface like paper or a scanner screen. That problem is eliminated with 3D contactless fingerprinting. PolyU’s contactless printing technology has developed to a measured 97% accuracy with prints scanned without the closeness of touch.
Minutiae (specific points in a fingerprint) features such as ridge edges and bifurcation (where a ridge splits into two) are the most universally recognized fingerprint details. About 40 to 45 minutiae points can be recovered from an average fingerprint scan. The more minutiae points that are matched, the higher the confidence and reliability of the match. With 3D fingerprinting technology, more information is captured, allowing a more accurate representation of a fingerprint, and a higher certainty in matching.
More accuracy, more portability and more affordability in 3D contactless fingerprint identification systems will provide a boon to law enforcement agencies, forensics, secure access, and border and travel security.
A new 3D fingerprint identification system developed
Published by By BioSpectrum Bureau, April 3, 2017
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