| 摘要 |
<p>PURPOSE: A password input device for changing positions of passwords in random is provided to protect the property and information of a user from being used in stealth. CONSTITUTION: A password input position on a screen is changed by adding a switch portion on an LCD(Liquid Crystal Display) screen, and the position of a number is designated as one of 1,4,7 and *. The rest numbers are display one by one. The password of a user is protected from the exposure to the outside by changing the position of the password numbers displayed on the LCD screen. Therefore, the use information is protected from the exposure to the outside by chaining the position of the numbers every time.</p> |
