| 摘要 |
PROBLEM TO BE SOLVED: To prevent a number used for a password from being seen by a person waiting in line or a neighboring person when depressing the switches to input the password. SOLUTION: A terminal machine which requests a user to input the password for identification consists of a password input means 1, a password storage buffer 3, and four key switches, i.e. an UP switch 4, a DOWN switch 5, a decision key 6, and a correction switch 7, so the security can be improved with a simple constitution. |
