NIST Handbook 150-25 augments NIST Handbook 150, NVLAP Procedures and General Requirements, by gathering the technical requirements of the Laboratory Accreditation Program (LAP) for conformance testing to biometrics standards, interoperability testing, technology testing, scenario testing, operational and usability testing of biometric systems and subsystems based upon nationally and internationally recognized biometrics products testing standards. Technical requirements are explained to indicate how the NVLAP criteria are applied for accreditation under the Biometrics LAP