Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Two Finger Matching with Vendor SDK Matchers



Craig I. Watson, Charles L. Wilson, Michael D. Indovina, Brian J. Cochran


This report is an extension of the NIST Studies of one-to-one Fingerprint Matching with Vendor SDK Matchers which evaluated the accuracy of SDK (Software Development Kit) based on COTS (Commercial Off-The-Shelf) fingerprint matching systems for one-to-one verification applications. Fingerprint matching systems from twelve vendors were evaluated. The two finger matching evaluation is an extension of that testing used to evaluate the accuracy that can be achieved by combining the index finger scores to achieve a match. These results are based on the SDK matchers provided for the original single finger SDK testing. More details will be available from the Minutiae Exchange Test 2004 (MINEX04) The more accurate matchers in the two finger SDK scoring were able to achieve true accept rates (TAR) in the range of .985 - .998 at a false accept rate (FAR) of 0.0001. A copy of this report and appendices is available at
NIST Interagency/Internal Report (NISTIR) - 7249
Report Number


fingerprint match, Live-scan, SDK test, two-finger match


Watson, C. , Wilson, C. , Indovina, M. and Cochran, B. (2005), Two Finger Matching with Vendor SDK Matchers, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed July 22, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created July 1, 2005, Updated February 19, 2017