Patent attributes
A computer implemented method of authenticating a user accessing a secure terminal, comprising obtaining identification information stored in a personal machine readable storage medium exclusively associated with an accessing user attempting to access a secure system, retrieving authentication information exclusively associated with the accessing user from a remote network resource using the identification information, operating one or more privately directed user interfaces to exclusively present to the accessing user a requested alteration to a challenge request generated based on the authentication information and presented via another user interface, receiving a response to the challenge request from the accessing user and granting the accessing user access to the secure terminal in case the response matches the altered challenge request and denying access in case of no match. The privately directed user interface(s) is adapted to make the presentation of the required alteration discernable only by the accessing user.
