| 摘要 |
PROBLEM TO BE SOLVED: To provide an authentication device or the like capable of ensuring higher level security. SOLUTION: A random number is generated (S201), and the combination of numerals and alphabets is decided, based on the generated random number (S202), and the combination of the numerals and alphabets is displayed (S204). A user recognizes the displayed contents, and inputs four alphabetical characters, corresponding to a password constituted own four digit numeral from a microphone. A control part fetches them (S205) and executes character recognition (S207). Whether or not all the characters, that is, those four characters can be recognized is discriminated (S208), and when it is determined that all the characters can be recognized, that is that the four alphabetical characters are converted into four-character numer based on the corresponding relation of the numerals and the alphabets (S209). Moreover, whether or not the converted four numerals are matched with the password of the user stored in a password storage part is discriminated (S210). |
