| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively prevent a password from being stolen in a password input device. <P>SOLUTION: Not only password data for which characters of numerals (corresponding to the key operation count value of an "input" key 13a1) desired by a user are arrayed for respective digits are easily inputted by operating only two keys which are the "input" key 13a1 and an "establishment" key 13a2 while looking at the switching display of the numerals and a prescribed character M at the respective digit display parts 17a1-17a4 of a display part (1) 17a, but also, since the character of the numeral selected corresponding to a random number generated every time is successively displayed at the respective digit display parts 17a1-17a4 as a dummy password, a user password being inputted is not found from the movement of a hand and it is surely prevented from being stolen by a third person by disturbance by the dummy password. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
