Abstract: In computer-based user authentication, a user may establish or enhance security for a component of a multi-component password by performing a security operation on a selected component of the password. The security operation may comprise encrypting the selected component. The password may be an image-based password and security operation may be encrypting information related to positions of at least one target location on a verification image.

Abstract: In computer-based user authentication, a user may establish or enhance security for a component of a multi-component password by performing a security operation on a selected component of the password. The security operation may comprise encrypting the selected component. The password may be an image-based password and security operation may be encrypting information related to positions of at least one target location on a verification image.

Abstract: In computer-based user authentication, a user performs an image-based log-in comprising a set of actions on at least one verification image on a display screen. Users are authenticated by a computer comparing the set of actions against a key definition for the verification image. The set of actions may include selecting a target location on the image, selecting target locations in a selected order and/or with a selected pattern, superimposing a target location with a selected overlay, covering target locations with overlays in a selected superimposing order and/or pattern. The user may define the set of actions and verification image to establish the log-in. The user may also establish or enhance security for a component of a multi-component password, which may be an image-based password; one method is to encrypt the position of at least one target location and to modify the encryption as frequently as desired.

Abstract: In computer-based user authentication, a user performs an image-based log-in comprising a set of actions on at least one verification image on a display screen. Users are authenticated by a computer comparing the set of actions against a key definition for the verification image. The set of actions may include selecting a target location on the image, selecting target locations in a selected order and/or with a selected pattern, superimposing a target location with a selected overlay, covering target locations with overlays in a selected superimposing order and/or pattern. The user may define the set of actions and verification image to establish the log-in. The user may also establish or enhance security for a component of a multi-component password, which may be an image-based password; one method is to encrypt the position of at least one target location and to modify the encryption as frequently as desired.

Abstract: Systems and methods are disclosed for computer-based user authentication to prove user identity or to approve access to a resource such as a computer system, in which a user performs a set of actions on at least one verification image on a display screen. Users are authenticated by a computer comparing the set of actions against a key definition for the verification image. The set of actions may include selecting at least one target location on the image, selecting target locations in a selected order, selecting the target locations with a selected pattern, selecting at least one overlay with which to cover a one target location, superimposing a target location with a selected overlay, covering the target locations with overlays in a selected superimposing order; and covering the target locations with overlays in a selected superimposing pattern.