| 摘要 |
In a state in which an authentication screen (3c) in any one display language (e.g., Korean) of a plurality of display languages is displayed, every time a predetermined number of (e.g., two) characters are input to an ID input field (7), an ID including the characters input to the ID input field (7) in order from a first-input is retrieved from user data (D). Ids, obtained as a result of the retrieval, are set as candidate IDs. When all display languages selected by users having the candidate IDs are the same (e.g., all the display languages are Japanese), the display language selected by the users having the candidate IDs is set as a first display language. When a display language of an authentication screen (3c), which is being displayed, does not coincide with the first display language, an authentication screen (3d) in the first display language is displayed in place of the authentication screen (3c), which is being displayed. |
