Persona is a San Francisco-based identity platform that differentiates itself through highly configurable verification workflows - operators can chain document verification, database lookups, biometric checks, and custom rules into a single cohesive onboarding flow without writing glue code. For adult platforms, this means you can build an age gate that escalates from a lightweight database check to a full document scan only for flagged sessions, controlling both friction and cost. Government-issued ID verification and liveness detection are core capabilities.

As with any vendor handling identity and biometric data, review their security posture and data-handling commitments before committing to a long-term integration.