| 摘要 |
Before the operating system of a computer has booted, a password is entered to the computer. If the password is incorrect, a soft keyboard is displayed on the screen of the computer to allow the user to enter the password. Characters may be selected from the soft keyboard using the computers s pointing device. The characters on the soft keyboard may match those of a specific keyboard layout. The basic input/output system (BIOS) may receive the password. When a user tries to change the password, the BIOS may reject it, if it cannot be entered by the keyboard attached to the computer.
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