Patent ID: 8516563

Claim:
A method for authenticating a user without personal information, the method comprising: obtaining at a secure authentication computing apparatus a context identifier, a registration identifier of one of a plurality of string generator modules assigned to a client computing device requesting access, and a client string generated by the client computing device requesting access from an agent computing device associated with the client computing device requesting access, the obtained client string is generated based on the context identifier obtained from the agent computing device associated with the client computing device requesting access and the one of the plurality of string generator modules assigned to the client computing device requesting access; generating with the secure authentication computing apparatus an authentication string based on the obtained context identifier from the agent computing device associated with the client computing device requesting access and a corresponding one of the plurality of string generator modules provided to the client computing device requesting access based on the registration identifier; and granting with the secure authentication computing apparatus the requested access by the client computing device when the client string matches the authentication string.