ISO/IEC 19794-7:2021
Information technology — Biometric data interchange formats — Part 7: Signature/sign time series data
Information technology — Biometric data interchange formats — Part 7: Signature/sign time series data
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 84
- Дата публикации:
- 29 октября 2021 г.
- Издание:
- ISO/IEC IS 19794 edition 3 version 1
- ICS:
- 35.240.15
This document specifies data interchange formats for signature/sign behavioural data captured in the form of a multi-dimensional time series using devices such as digitizing tablets or advanced pen systems. The data interchange formats are generic, in that they can be applied and used in a wide range of application areas where handwritten signs or signatures are involved. No application-specific requirements or features are addressed in this document. This document contains: — a description of what data can be captured; — three binary data formats for containing the data: a full format for general use, a compression format capable of holding the same amount of information as the full format but in compressed form, and a compact format for use with smart cards and other tokens that does not require compression/ decompression but conveys less information than the full format; — an XML schema definition; and — examples of data record contents and best practices in capture. Specifying which of the format types and which options defined in this document are to be applied in a particular application is out of scope; this needs to be defined in application-specific requirements specifications or application profiles. It is advisable that cryptographic techniques be used to protect the authenticity, integrity, and confidentiality of stored and transmitted biometric data; yet such provisions are beyond the scope of this document. This document also specifies elements of conformance testing methodology, test assertions and test procedures as applicable to this document. It establishes test assertions on the structure and internal consistency of the signature/sign time series data formats defined in this document (type A level 1 and 2 as defined in ISO/IEC 19794-1) and semantic test assertions (type A level 3 as defined in ISO/IEC 19794-1). The conformance testing methodology specified in this document does not establish: — tests of other characteristics of biometric products or other types of testing of biometric products (e.g. acceptance, performance, robustness, security); or — tests of conformance of systems that do not produce data records claimed to conform to the requirements of this document.
Abstract
Overview
ISO/IEC 19794-7:2021 specifies biometric data interchange formats for signature/sign time series data. It defines how dynamic handwriting and signature behaviour - captured as multi-dimensional time series from devices such as digitizing tablets and advanced pen systems - are represented, exchanged, and tested for conformance. The standard provides binary and XML encodings, examples, best practices for capture, and a conformance testing methodology. It is the third edition (2021) of Part 7 of the ISO/IEC 19794 series.
Key Topics
- Data captured: Multi-dimensional channels such as pen tip position (X, Y, Z), velocity (VX, VY), acceleration (AX, AY), time (T, DT), force (F), switch state (S) and pen orientation (TX, TY, azimuth, elevation, rotation). (The standard describes these channels and their semantics.)
- Three binary formats:
- Full format for general use (rich set of channels).
- Compression format (lossless compression option to hold the same information in smaller size).
- Compact format for constrained devices/tokens (smart cards) that conveys less information without requiring compression/decompression.
- XML schema: An XML encoding is provided (schema in Annex E) to support interoperable XML-based interchange.
- Encoding references: Includes ASN.1 specification for the binary compact format and references to ASN.1 encoding rules (e.g., ISO/IEC 8825-1).
- Conformance testing: Test assertions and procedures for structure, internal consistency (type A levels 1 & 2) and semantic assertions (type A level 3) as defined in ISO/IEC 19794-1.
- Capture best practices: Examples and guidance on data record contents and recommended capture procedures (informative Annex B).
- Security note: Use of cryptographic techniques to protect authenticity, integrity and confidentiality is advised but out of scope.
Applications
ISO/IEC 19794-7 is applicable to a wide range of signature-related systems and use cases:
- Signature verification and authentication (on-line biometrics)
- Digital onboarding and e-signature capture
- Smart card / token storage of signature templates (using the compact format)
- Forensic and audit applications that require interoperable, time-series signature records
- Device manufacturers and software developers building interoperable signature capture and comparison tools
Who Should Use It
- Biometric system integrators and vendors
- Pen tablet and advanced input device manufacturers
- Smart-card and secure token developers
- Identity management and e-signature solution providers
- Standards bodies, test labs and government ID programs
Related Standards
- ISO/IEC 19794-1 (Framework for biometric data interchange formats)
- ISO/IEC 8825-1 (ASN.1 encoding rules)
- Other parts of the ISO/IEC 19794 series for complementary biometric modalities
Keywords: ISO/IEC 19794-7, biometric data interchange, signature time series, signature capture, XML schema, smart card, conformance testing, pen tablet, signature verification.
Технические детали
- Технический комитет
- ISO/IEC JTC 1/SC 37 - Biometrics
- SKU
- ISO/IEC 19794-7:2021
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