Introduction

Introduction to Very developer tools and APIs

Very provides developers with two powerful ways to verify users as unique humans — without compromising security or privacy. Our platform uses palm biometrics as a secure, universal identifier and offers two integration modes:

• Anonymous Mode (ZK Proofs): Users remain fully private. Your app receives a zero-knowledge proof, not personal data, to confirm uniqueness or eligibility.

• Pseudonymous Mode (OAuth2): For apps needing persistent user records, Very issues a secure, app-scoped external_user_id, so you can link sessions without ever handling biometric data.