Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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QQ - Does anyone know a quick way to enforce unique identity across multiple authentication methods?
See bottom of page <https://www.ory.sh/docs/kratos/concepts/credentials>
I want to enable Passwordless (Email Code), auto-verify (since they used their email) and auto-login, provide option to create WebAuthN/FIDO2 passkey(s) and recovery codes... For sign-in want to prompt for their email, then provide option to send code or login with biometrics/key.  Ory portal's Self Service UI doesn't seem to support this (WebAuthN passwordless enabled will allow new identity registration, even when same email already used with Passwordless Email Code) -- and WebAuthN login disabled, WebAuthN 2FA enabled doesn't adjust login experience to collect email first and present options, or provide both options for login.