Abstract: The present invention advantageously provides the ability to link one or more personas in order to authenticate that they are the same electronic persona, real person, or real world non-person entity such as a corporation, organization, or computer process. Additionally, embodiments of the present invention facilitate the collection and validation of one or more Attributes of some or all linked personas. In particular, the present invention employs a novel software subsystem and snail-mail procedure that links a real person's Attributes in order to authenticate the link to declared associated one or more electronic personas. The software that performs the authentication is embodied as a Linked Personas Authenticator and associated subsystems and files associated therewith.