Translation guide
The process of verifying identity or validity. In Japanese, the translation depends on context: logging in, verifying documents, or confirming authenticity.
two-factor authentication
Often abbreviated as 二段階認証 (にだんかいにんしょう) in consumer services.
biometric authentication
Verifying a user's identity to access a system, app, or device.
The standard technical term for authentication in IT contexts. Used for user login, biometrics, two-factor, etc.
Please set up two-factor authentication.
You can log in with fingerprint authentication.
While technically 'login', it's often used in everyday speech to mean the authentication step.
Confirming that a document, certificate, or signature is genuine.
Also used for official certification of documents, like notarization or apostille.
This document has been authenticated by a notary public.
Means 'certification' or 'proof'. Often used in contexts like proving authenticity of a document.
Formal phrase meaning 'verification of authenticity'. Used in legal or archival contexts.
Verifying that an artwork, antique, or luxury item is genuine, not a forgery.
Expert appraisal or authentication of art, antiques, etc.
This painting was authenticated by an expert.
Literally 'genuine/fake judgment'. Used in art and antique authentication.
Means 'genuine article'. In casual contexts, saying something is '本物' implies it has been authenticated.
認証 (authentication) is about verifying identity. 承認 (approval) is about granting permission. Don't confuse them.
Login requires authentication.
The application requires the boss's approval.
In casual situations like showing ID at a store, 認証 sounds overly technical. Use 本人確認 or simply 確認.
Please show ID for age verification.
Literally 'identity verification'. Often used for online identity checks (eKYC) or when opening accounts.
Identity authentication is required to open an account.
パスワードでログインしてください。
Please authenticate with your password.
本人であることの証明が必要です。
You need authentication of your identity.
Authentication of the document's authenticity is required.
Authentication takes time.
これは本物だと証明されました。
This was authenticated as genuine.