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Evaluation of Latent Friction Ridge Technology

Test Results | Mailing List | Test Plan (PDF) and API


Evaluation of Latent Friction Ridge Technology (ELFT) is a one-to-many biometric identification technology evaluation that uses digitized latent friction ridge images and/or feature sets as probes and all types of friction ridge images as references. ELFT exercises the template creation and template searching algorithms at the core of Automated Fingerprint Identification Systems (AFIS), not the system itself.


  1. Fill out the request for the dataset agreement to receive the validation dataset.
  2. Sign, elft [at] (e-mail a scanned copy), and postal mail the original signed evaluation agreement to NIST. If provided, please include the delivery tracking numbers when e-mailing your scanned agreement. Both an e-mail scanned copy and physical hard copy are required.
  3. Wrap your algorithm in the ELFT application programming interface (API), and built it as a shared library.
  4. Follow the instructions for validation on GitHub.
  5. E-mail the signed and encrypted output of validation to the elft [at] (ELFT team).


ELFT is a relaunch and reimagining of the similarly named Evaluation of Latent Fingerprint Technologies, which was conducted at NIST 2006–2012:


Created May 7, 2020, Updated September 30, 2021