An improved authentication, identification, and/or verification system is provided in various embodiments. The system is provided for use in relation to provisioning access or establishing identity in relation to one or more human users, and may be used in a single site/scenario/system, or across multiple sites/scenarios/systems. A combination of biometric modalities and authentication mechanisms having diverse characteristics are utilized to establish identity, the diverse characteristics being utilized to modify aspects of identity management and access provisioning.