にだんかいにんしょう 2段階認証 LinksSentence search for 2段階認証Sentence search for にだんかいにんしょうSentence search for 二段階認証Kanji details for 段, 階, 認 and 証Edit in JMdict Noun1. two-factor authenticationComputingOther forms二段階認証 【にだんかいにんしょう】 Discussions Log in to talk about this word.