Research Shows Fingerprint Accuracy Stays the Same over Time

June 30, 2015

Though fingerprints are assumed to be infallible personal identifiers, there has been little scientific research to prove this claim to be true. As such, there have been repeated challenges to the admissibility of fingerprint evidence in courts of law.

"We wanted to answer the question that has plagued law enforcement and forensic science for decades: Is fingerprint pattern persistent over time?" said Anil Jain, University Distinguished Professor, computer science and engineering, at Michigan State University. "We have now determined, with multilevel statistical modeling, that fingerprint recognition accuracy remains stable over time."

Jain, along with his former Ph.D. student Soweon Yoon, who is now with the National Institute of Standards and Technology, used fingerprint records of 15,597 subjects apprehended multiple times by the Michigan State Police over a time span varying from five to 12 years.

The results show that fingerprint recognition accuracy doesn't change even as the time between two fingerprints being compared increases.

The paper by Yoon and Jain, published in the Proceedings of the National Academy of Sciences, is the largest and most thorough study of the persistence of Automated Fingerprint Identification Systems, or AFIS, accuracy.

Jain's research was supported by a grant from the National Science Foundation Center for Identification Technology Research.

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Research Shows Fingerprint Accuracy Stays the Same over Time

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