ISO/IEC 19784-1:2018定义了生物识别系统内标准接口的应用程序编程接口（API）和服务提供商接口（SPI），这些接口支持使用多家供应商的组件提供生物识别系统。它通过遵守本标准和其他国际标准，在这些组件之间提供相互作用。 对于不包括BioAPI框架（称为无框架BioAPI系统）的系统，只有SPI接口适用，应用程序以特定于平台的方式直接与该接口连接。 注1:本文件的许多条款和/或子条款不适用于无框架BioAPI系统的实施。这些在子条款的标题处确定。 BioAPI规范适用于多种生物识别技术类型。 它还适用于各种生物识别应用，从个人设备到网络安全应用，再到大型复杂识别系统。 ISO/IEC 19784-1:2018支持一种体系结构，其中BioAPI框架支持多个同步生物识别应用（由不同供应商提供），使用多个动态安装和加载（或卸载）的生物识别服务提供商（BSP）组件和BioAPI单元（由其他不同供应商提供），可能使用一组替代的BioAPI功能提供者（BFP）组件（由其他供应商提供）或直接管理BioAPI装置。 注2:如果BioAPI装置由BSP的不同供应商提供，则可能需要标准化的BioAPI功能提供者接口（FPI）。 这不在本文件的范围内，但后面的部分针对不同类别的FPI进行了规定。 注3:如果系统中未使用BioAPI框架，则支持多个应用程序和多个BSP的能力取决于平台，并取决于所采用的系统集成技术的性质。 当从单个供应商处采购完整的生物识别系统时，不需要（通常不应参考）ISO/IEC 19784-1:2018，尤其是当生物识别硬件、服务或应用的添加或交换不是该生物识别系统的一个功能时。（此类系统有时被称为“嵌入式系统”。）此类系统的标准化不在本文件范围内。 ISO/IEC 19784-1:2018未定义生物识别应用和生物识别服务提供商的安全要求。 注4:ISO 19092提供了生物识别系统安全方面的指南[3]。 生物识别系统的性能（尤其是在搜索大量人口以提供生物识别能力方面）不在本文件的范围内。互操作性和性能之间的权衡不在本文档的范围内。 ISO/IEC 19784-1:2018规定了BioAPI规范的一个版本，其版本号定义为大调2、小调0或版本2.0。它还指定了一个版本号，称为Major 2、Minor 1或version 2.1，提供了增强的图形用户界面。它还指定了一个版本号，称为Major 2、Minor 2或version 2.2，提供支持融合和安全性的功能。一些条款和子条款- 条款只适用于其中一个版本，有些适用于两个或更多版本。这一点在相关条款和子条款的开头。 注5:BioAPI规范的早期版本不是国际标准。 注6:2.0规范和2.1规范对无框架操作的要求之间的差异仅与生物特征类型值和编码有关。 第5条规定了一致性要求。

ISO/IEC 19784-1:2018 defines the Application Programming Interface (API) and Service Provider Interface (SPI) for standard interfaces within a biometric system that support the provision of that biometric system using components from multiple vendors. It provides interworking between such components through adherence to this and to other International Standards. For use in a system that does not include a BioAPI Framework (called a framework-free BioAPI system), only the SPI interface is applicable, with applications interfacing directly to that in a platform-specific manner. NOTE 1 Many clauses and/or sub-clauses of this document are not applicable for implementation of a framework-free BioAPI system. These are identified at the head of the clause of sub-clause. The BioAPI specification is applicable to a broad range of biometric technology types. It is also applicable to a wide variety of biometrically enabled applications, from personal devices, through network security applications, to large complex identification systems. ISO/IEC 19784-1:2018 supports an architecture in which a BioAPI Framework supports multiple simultaneous biometric applications (provided by different vendors), using multiple dynamically installed and loaded (or unloaded) Biometric Service Provider (BSP) components and BioAPI Units (provided by other different vendors), possibly using one of an alternative set of BioAPI Function Provider (BFP) components (provided by other vendors) or by direct management of BioAPI Units. NOTE 2 Where BioAPI Units are provided by a different vendor fom a BSP, a standardised BioAPI Function Provider Interface (FPI) may be needed. This is outside the scope of this document, but is specified by later parts for the different categories of FPI. NOTE 3 Where a BioAPI Framework is not used in a system, the ability to support multiple applications and multiple BSPs is platform-dependent and depends on the nature of the system-integration techniques employed. ISO/IEC 19784-1:2018 is not required (and should normally not be referenced) when a complete biometric system is being procured from a single vendor, particularly if the addition or interchange of biometric hardware, services, or applications is not a feature of that biometric system. (Such systems are sometimes referred to as "embedded systems".) Standardisation of such systems is not in the scope of this document. ISO/IEC 19784-1:2018 does not define security requirements for biometric applications and biometric service providers. NOTE 4 ISO 19092 provides guidelines on security aspects of biometric systems[3]. The performance of biometric systems (particularly in relation to searches of a large population to provide the biometric identification capability) is not in the scope of this document. Trade-offs between interoperability and performance are not in the scope of this document. ISO/IEC 19784-1:2018 specifies a version of the BioAPI specification that is defined to have a version number described as Major 2, Minor 0, or version 2.0. It also specifies a version number described as Major 2, Minor 1, or version 2.1 that provides an enhanced Graphical User Interface. It also specifies a version number described as Major 2, Minor 2, or version 2.2 that provides features supporting fusion and security. Some clauses and sub-clauses apply only to one of these versions, some to two or more. This is identified at the head of the relevant clauses and sub-clauses. NOTE 5 Earlier versions of the BioAPI specification were not International Standards. NOTE 6 The differences between the requirements of the 2.0 specification and the 2.1 specification for framework-free operation relate only to the biometric type values and encodings. Conformance requirements are specified in Clause 5.