ISO/IEC 29197:2015

INTERNATIONAL ISO/IEC
STANDARD 29197
First edition
2015-04-01
Information technology — Evaluation
methodology for environmental
influence in biometric system
performance
Technologies de l’information — Méthodologie de l’évaluation de
l’influence environnementale dans la performance d’un système
biométrique
Reference number
©
ISO/IEC 2015
© ISO/IEC 2015
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ii © ISO/IEC 2015 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Conformance . 1
3 Normative references . 1
4 Terms and definitions . 2
5 Overview . 3
5.1 Introduction . 3
5.2 Scenario evaluations . 4
5.3 Operational evaluations . 4
6 Evaluation conditions specification . 5
6.1 Introduction . 5
6.2 Definition of evaluation conditions . 5
6.2.1 Description of the evaluation conditions . 5
6.2.2 Types of environmental parameters . 5
6.3 Selection of the evaluation conditions . 6
6.3.1 General. 6
6.3.2 Reference evaluation environment for scenario evaluations . 6
6.3.3 Target evaluation environments . 6
6.4 Measurement and recording of the environmental conditions . 8
6.4.1 General. 8
6.4.2 Instruments to measure and record environmental conditions . 8
6.4.3 Requirements for measuring and recording environmental conditions . 8
7 Biometric scenario evaluation . 9
7.1 Introduction . 9
7.2 Define evaluation objectives . 9
7.3 Environment . 9
7.3.1 Environment for enrolment . 9
7.3.2 Generation and control of the environmental conditions . 9
7.3.3 Biometric system placement .10
7.4 Test population .10
7.4.1 General.10
7.4.2 Size .10
7.4.3 Selection .11
7.4.4 Training and guidance of test subjects .11
7.4.5 Visits .12
7.5 Acclimatization .12
7.6 Levels of effort and decision policies .12
7.7 Exception handling protocols.12
7.8 Data to record and test results .13
7.8.1 General.13
7.8.2 Requirements for recording data .13
7.8.3 Requirements for calculating results .13
7.8.4 Requirements for reporting results .14
7.9 Execution sequence .15
7.9.1 General.15
7.9.2 Pre-test activities .15
7.9.3 Test activities .15
7.9.4 Post-test activities.16
© ISO/IEC 2015 – All rights reserved iii

8 Operational evaluation .17
8.1 Introduction .17
8.2 Environment .17
8.3 Test period .17
8.4 Data recording processes .17
8.5 Performance measurements .18
8.6 Impostor transactions .18
8.7 Reporting .18
Annex A (informative) Values for environmental parameters .19
Annex B (informative) Test equipment .21
Bibliography .23
iv © ISO/IEC 2015 – All rights reserved

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Details of any patent rights identified during the development of the document will be in the Introduction
and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/IEC JTC 1, Information technology, SC 37, Biometrics.
© ISO/IEC 2015 – All rights reserved v

Introduction
The performance of biometric systems can vary according to environmental conditions
(see e.g. ISO/IEC 19795-1:2006, C.2.6, ISO/IEC TR 19795-3:2007, Table 4). Environmental conditions can
affect subjects’ ease of use and
...