Abstract: A multi-factor authentication system and a logon method for a Windows operating system are provided. The system and method thereof are essentially applied to a Windows Vista™ operating system. Without any influence upon the common usage of a user, a multi-factor authentication window is established on a logon screen of the Windows operating system, so as to establish a more secure and convenient logon method. The system includes means for logging on to a Windows OS via a logon program “Winlogon.exe”, means for calling “LogonUI.exe” by the “Winlogon.exe”, means for certifying a user by a credential provider, means for displaying the logon screen having the multi-factor authentication window, means for authenticating via multiple factors, means for identifying a user by comparing the user ID with the user's information in a database, means for refilling the user ID/password, and means for messaging.

Abstract: Systems and methods for registering fingerprints, setting a login method for an application, and logging into the application are provided. In the registration phase, the system receives a fingerprint signal, which is assigned to one of the many finger related data. In the phase which sets the login method, the system detects a login-signal, which comprises an identity, a password, and a command to execute the application. The system commands the display of the fingerprint related data and receives a selection message corresponding to one of the finger related data. The system assigns the application, the identity, the password to the selected fingerprint related data. In the login phase, the system receives the fingerprint signal and thereby, retrieves the corresponding application, the identity, and the password as well. The system generates a start signal comprising the identity, the password, and the command to execute the application.