prBAS ISO/IEC 20059:2026

This document establishes a methodology to evaluate the resistance of BSs to morphing attacks, including multiple identity attacks. The document is limited to image-based morphing attacks. The term "image-based" includes modalities such as face, iris and finger image data. The document establishes: —     a definition of biometric sample modifications and manipulation with a specific focus on manipulations that constitute a multiple identity attack. This can be, for instance, an enrolment attack with face image morphing; —     a methodology to measure the morphing attack potential of a morphing method. The document also describes how morphing algorithms can be used for system evaluation.