签入 Traditional form: 簽入 Pinyin (reading): qiānrù Definitions: to log on to log in Characters: 签 - to sign, to endorse; a note, a slip of paper 入 - to enter, to come in; to join Traditional characters: 簽 - to sign, to endorse; a note, a slip of paper 入 - to enter, to come in; to join