This document 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.nd edition 2018-04 Information technology — Biometric application programming interface — Part 1: BioAPI specification Technologies de l'information — Interface de programmation d'applications biométriques — Partie？1:？Spécifications？BioAPI Reference number ISO/IEC 19784-1:2018(E) ？ ISO/IEC 2018 ISO/IEC 19784-1:2018(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO/IEC