AFIS Interoperability Moves Forward

Three technical specifications that relate to automated fingerprint identification system (AFIS) interoperability were recently published by the National Institute of Standards and Technology.


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These specifications, discussed here in the September-October 2011 issue of Evidence Technology, provide the groundwork for agencies to realize vendor-neutral interoperability between AFIS systems, increased examiner efficiency, and reduced time and cost associated with training.

Latent Interoperability Transmission Specification
The Latent Interoperability Transmission Specification (LITS) is an application profile of the American National Standard for Information Systems: Data Format for the Interchange of Fingerprint, Facial & Other Biometric Information, American National Standards Institute/National Institute of Standards & Technology, Information Technology Laboratory (ANSI/NIST-ITL) 1-2011. LITS is a system-level specification, parallel to and compatible with the Federal Bureau of Investigation Criminal Justice Information Services Electronic Biometric cross-jurisdictional automated friction ridge identification systems (AFIS).

Extended Feature Set Profile Specification
This specification defines Extended Feature Set (EFS) Profiles - sets of features to be used in latent friction ridge (fingerprint, palmprint or plantar) searches of automated friction ridge identification systems (AFIS). The EFS Profiles are designed to be interoperable among AFIS systems from different vendors and to enable cross-jurisdictional searches that would not otherwise be practical. Multiple EFS Profiles are defined to allow for tradeoffs between examiner time and search accuracy. EFS Profiles also may be used simply to document latent friction ridge features, such as for potential use in legal proceedings or exchange between latent examiners, and need not be for AFIS matching purposes.

Markup Instructions for Extended Friction Ridge Features

This document provides instructions for latent print examiners in marking friction ridge features to maximize consistency among examiners. This document builds upon the Extended Feature Set (EFS) defined in American National Standard for Information Systems: Data Format for the Interchange of Fingerprint, Facial & Other Biometric Information, American National Standards Institute/National Institute of Standards and Technology, Information Technology Laboratory (ANSI/NIST-ITL) 1-2011. These instructions include examples and specific guidance for latent print examiners and minimize references to technical details of the file format. Three interrelated specifications have been designed to enable vendor-neutral latent automated friction ridge identification systems (AFIS) interoperability: the EFS Profile Specification; the Latent Interoperability Transmission Specification; and this one, Markup Instructions for Extended Friction Ridge Features.

 
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