Translation guide
A security process where users provide two different authentication factors to verify their identity. In Japanese, the English term is widely used, but native equivalents exist.
The standard way to refer to two-factor authentication in Japanese.
Using the English term directly in Japanese, which is very common in IT contexts.
A hybrid of English 'two-factor' and Japanese 認証. Widely understood in tech-savvy circles.
We introduced two-factor authentication.
The English abbreviation is commonly used in Japanese IT environments, pronounced as individual letters.
Please enter the 2FA code.
Referring specifically to the one-time code used in two-factor authentication.
二要素認証 (two-factor authentication) strictly requires two different types of factors (e.g., password + fingerprint). 二段階認証 (two-step verification) may use two steps of the same factor type (e.g., password + security question). In practice, many Japanese services use them interchangeably.
This service supports two-step verification.
In written Japanese, especially in technical documents or UI, '2FA' or '二要素認証' are common. In conversation, '二段階認証' is often used even if technically inaccurate.
Often used interchangeably with 二要素認証, though technically 'two-step verification' may differ slightly. Very common in consumer services.
I set up two-step verification.
Multi-factor authentication, used when more than two factors are involved. Not specific to two factors.
Multi-factor authentication enhances security.
Also means authentication code, slightly more formal.
Please enter the authentication code.