Foreword

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This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 17, Cards and security devices for personal identification.

This second edition cancels and replaces the first edition (ISO/IEC 17839-3:2016), which has been technically revised.

The main changes are as follows:

aligned with ISO/IEC 24787-1:2024;
improved terms and definitions;
restructured feedback messaging;
corrected feedback message format and examples;
updated all figures;
updated Annex A and Annex C;
introduced autonomous enrolment in Annex F.

A list of all parts in the ISO/IEC 17839 series can be found on the ISO and IEC websites.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-committees.

Introduction

A Biometric System-on-Card (BSoC) is a portable card-sized device including the following entities: biometric capture, image/signal processing, storage, comparison, decision and action. The use of a BSoC with such specifications is subject to an information flow and security mechanisms, which are detailed in this document.

ISO/IEC 17839-1 describes two types of BSoC. Type ID-1 is a fully flexible card conformant with ISO/IEC 7810. Type ID-T deviates from some of the requirements of size and flexibility, while keeping the rest of the requirements intact, including the use of a contactless ICC interface. The logical interface and security mechanisms are independent on whether the BSoC is of type ID-1 or type ID-T, so the specifications stated in this document are applicable to both types of BSoC.

The ISO/IEC 17839 series is organized into three separate documents:

ISO/IEC 17839-1, Biometric System-on-Card — Core requirements
ISO/IEC 17839-2, Biometric System-on-Card — Physical characteristics
ISO/IEC 17839-3, Biometric System-on-Card — Logical information interchange mechanism (this document)

1 Scope

This document specifies:

logical data structures for a Biometric System-on-Card (BSoC);
enrolment procedures; and
usage of commands and data structures defined in other International Standards for BSoC.

This document does not define requirements for:

commands and data structures that apply to devices external to a BSoC;
commands and data structures that apply to logical interfaces inside a BSoC.

2 Normative references

3 Terms and definitions

4 Abbreviated terms

5 Conformance

6 Logical data structures

6.1 BSoC capability

6.2 Identifying the biometric reference in a BSoC

6.3 Configuration data

6.4 Enrolment procedures

6.5 Initiation of biometric verification

7 Discovery of services

8 Operational sequence

9 Feedback to user from IFD

9.1 General

9.2 Feedback messaging mechanism

9.3 IFD's behaviour based on output from BSoC

9.4 Time management in BSoC

Bibliography