BS ISO IEC 19795-5 pdf download

BS ISO IEC 19795-5 pdf download.Information technology — Biometric performance testing and reporting — Part 5: Access control scenario and grading scheme
1 Scope
This part of ISO/IEC 19795: ⎯ defines a common biometric access control scenario for use in scenario evaluation of biometric verification systems; ⎯ provides a grading scheme for expressing quantitative biometric system requirements and performance levels; ⎯ provides a common basis for conducting scenario evaluations to demonstrate that specified performance grades are being achieved which is adaptable to particular testing facilities and to specific biometric systems. This part of ISO/IEC 19795 is applicable to performance testing of biometric systems without detailed knowledge of the comparison algorithms or of the underlying distribution of biometric characteristics in the population of interest. The minimum false accept rate (FAR) tested by this part of ISO/IEC 19795 is 0.1%. If a lower FAR is required, customized testing (outside the scope of this part of ISO/IEC 19795) might be appropriate, and needs to be fully compliant with ISO/IEC 19795-2. This part of ISO/IEC 19795 addresses testing a biometric system for physical access control, and the suitability of the testing for logical access devices needs to be determined on a case-by-case basis. Not within the scope of this part of ISO/IEC 19795 is the measurement of error and throughput rates for people deliberately trying to circumvent correct recognition by the biometric system (i.e. active impostors). In addition, this part of ISO/IEC 19795 does not assess the following: ⎯ reliability, availability and maintainability; ⎯ security, including vulnerability; ⎯ human factors, including user acceptance; ⎯ environmental impacts; ⎯ safety; ⎯ cost/benefit/suitability; ⎯ privacy regulation compliance. These assessments are the responsibility of the procuring authority.
3 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 19795-1:2006, Information technology — Biometric performance testing and reporting — Part 1: Principles and framework ISO/IEC 19795-2:2007, Information technology — Biometric performance testing and reporting — Part 2: Testing methodologies for technology and scenario evaluation ISO/IEC TR 19795-3, Information technology — Biometric performance testing and reporting — Part 3: Modality-specific testing
4 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 19795-1 and the following apply. 4.1 access control system ACS entire electro-mechanical suite that performs the granting or denying of access at controlled entry points of a facility 4.2 biometric subsystem portion of a biometric system that is present at each access entry point, including the biometric sensor or sampling subsystem 4.3 grade levels measurement associated with the quantified levels of biometric subsystem performance NOTE Grade levels are defined, ranging from 0 to 3, or 0 to 6. It is possible that additional grade levels above these values will be defined at a future date. 4.4 FAR level scale for the relative level of resistance to false accepts in a form associated with three specific false accept rate (FAR) values 4.5 transaction time time required for the biometric system portion of an access control transaction NOTE Transaction time is measured in seconds.
5 Definition of testing scenario
5.1 Overview The goal of testing and evaluating biometric access control systems against the standard set of criteria documented in this part of ISO/IEC 19795 is to ensure that the technical performance of every biometric access control system is evaluated fairly, accurately and equivalently. Testing shall be performed in a consistent, unbiased manner under conditions that are well understood and documented. Test controls shall be applied to ensure reproducible test results to the most practical extent possible (considering the involvement of human crew members). To accomplish this, every candidate biometric access control system shall be tested in accordance with the same general test protocol. The procedures to be used shall be based upon a “framework” consisting of specific metrics extracted from biometric system operations and accompanying evaluation criteria which provides for graded evaluation against different levels of false accept rate. The evaluation framework shall accommodate biometric subsystems that output similarity scores or that output only the final match/no match decision. NOTE 1 Throughout this part of ISO/IEC 19795, where reference is made to similarity scores, it should be understood that for those test results in the form of decision output, the equivalent, suitable process is applied. NOTE 2 Throughout this part of ISO/IEC 19795, where reference is made to similarity scores, it should be understood that devices that generate dissimilarity scores will be accommodated by making the appropriate threshold comparison matching decisions. To facilitate the testing of a specific biometric access control system, a specialized biometric test procedure shall be developed. It shall be identical to the general procedure with the exception that any additional information (for example sliding the cover to allow placement of a finger to a sensor) needed in the real-world operation of a particular biometric access control system shall be identified.