ISO/IEC 24779-4:2017

INTERNATIONAL ISO/IEC
STANDARD 24779-4
First edition
2017-01
Information technology — Cross-
jurisdictional and societal aspects
of implementation of biometric
technologies — Pictograms, icons
and symbols for use with biometric
systems —
Part 4:
Fingerprint applications
Technologies de l’information — Aspects sociétaux et trans-
juridictionnels de la mise en oeuvre des technologies biométriques —
Pictogrammes, icônes et symboles pour utilisation avec les systèmes
biométriques —
Partie 4: Applications des empreintes digitales
Reference number
©
ISO/IEC 2017
© ISO/IEC 2017, Published in Switzerland
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ii © ISO/IEC 2017 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Individual symbols, icons and pictograms . 2
4.1 General . 2
4.2 General symbol indicating fingerprint application . 2
4.3 Finger/hand placement. 3
4.4 Finger/hand quality feedback . 6
4.4.1 Press (more or less) . 6
4.4.2 Raise/lower angle . 7
5 Finger/hand positioning . 8
5.1 General . 8
5.2 Overlay visual guidance for finger/hand orientation . 9
5.3 Necessary finger/hand movement .11
5.3.1 Lateral movements .11
5.3.2 Forward/backward movements .14
5.4 Rotation .17
5.4.1 General.17
5.4.2 Rotate clockwise .17
5.4.3 Rotate Counter-Clockwise .18
5.5 Change angle .20
5.5.1 General.20
5.5.2 Raise/increase finger angles .20
5.5.3 Lower/decrease finger angles .22
5.6 Rolling finger(s) .23
5.7 Testing of hand-positioning visual guidance .24
Annex A (informative) Usability testing approach .25
Annex B (informative) Usability study of corrective visual guidance — Lateral, forward/
backward and rotating movements .30
Annex C (informative) Stepwise illustrations of the animation of Figure 30 .34
Bibliography .37
© ISO/IEC 2017 – All rights reserved iii

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 ISO documents 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 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 World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/IEC JTC1, Information technology, Subcommittee
SC 37, Biometrics.
A list of all parts in the ISO/IEC 24779 series can be found on the ISO website.
iv © ISO/IEC 2017 – All rights reserved

Introduction
A major public application of biometric recognition today is likely to be passports, but in the near
future, it is probable that biometric recognition will be used in other public devices. These devices will
be located in a variety of environments including unsupervised, a device supervised by an attendant or
only partly supervised — for example, an attendant supervising a number of devices or devices observed
via CCTV and an audio link. Language-independent pictograms, icons and symbols that indicate the
biometric modality and illustrate actions and behaviour required will be particularly important for
occasional users. In general, it is desirable for there to be more than one mode of presentation (e.g.
visual and audible or tactile). Only visual presentation is addressed in ISO/IEC 24779.
It is recommended that pictograms, icons and symbols are used in the enrolment process, so that the
subject becomes familiar with their meaning.
A standard family of pictograms, icons and symbols is required since in the absence of widely used
standard pictograms, icons and symbols, manufacturers will adopt their own proprietary printed
pictograms, icons and symbols for display on screens. This is likely to lead to confusion for public users
of self-service devices.
© ISO/IEC 2017 – All rights reserved v

INTERNATIONAL STANDARD ISO/IEC 24779-4:2017(E)
Information technology — Cross-jurisdictional and societal
aspects of implementation of biometric technologies —
Pictograms, icons and symbols for use with biometric
systems —
Part 4:
Fingerprint applications
1 Scope
This document contains a set of symbols, icons and pictograms to help the general public understand
the concepts and procedures for using electronic systems that collect and/or process fingerprints. This
set of symbols, icons and pictograms is designed to be used to
— identify the type of biometric device,
— provide static instructions related to a fingerprint device,
— display dynamic real-time information related to the fingerprint device, and
— indicate the status of the fingerprint device.
To provide this functionality, the set of symbols, icons and pictograms includes both directional
symbols, icons and pictograms and real-time action or feedback symbols, icons and pictograms. The
fingerprint device symbols, icons and pictograms can be categorized as
— finger/hand general biometric,
— kind of finger, four fingers or hand device,
— finger/hand placement,
— biometric position and impression which needs to be presented next,
— hand orientation (switched hands),
— finger/hand quality feedback,
— press (more or less),
— raise/lower angle,
— finger/hand positioning,
— hand/finger orientation,
— necessary finger/hand movement (forward, backward, lateral),
— rotation,
— change angle, and
— rolling finger(s).
Although the symbols, icons and pictograms are presented individually, it is intended that the symbols,
icons and pictograms be combined to fully illustrate the fingerprinting interaction.
© ISO/IEC 2017 – All rights reserved 1

Alternative illustrations might be used; for example, in a customs or immigration environment,
procedures constructed from the individual symbols, icons and pictograms could additionally be
presented as
— a series of posters while waiting to use the biometric system,
— a series of transitional frames in a biometric booth,
— an animated video or series of transitional frames while waiting to use the biometric system, and
— instructional leaflets to read while waiting to use the biometric system.
This multi-part International standard focuses on communication with the data capture subject.
Operators could use this International standard, but they might need additional symbols and
information.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Individual symbols, icons and pictograms
4.1 General
The symbols and icons for aiding the fingerprint presentations are shown in the following figures.
1)
The symbols, icons and pictograms included in this clause have undergone usability testing . The
symbols, icons and pictograms were tested with representative users using two different methods.
The first round of testing used interviews. Using this approach, the interviewers described the context
in which the symbols, icons and pictograms were to be used and asked each participant to identify
the meaning of each symbol, icon or pictogram. This testing was followed by operational testing or
task-based testing where participants were asked to take a
...