Patent attributes
Described systems and methods allow secure and relatively convenient authentication of a secure login session. When a user initiates a login session on a secure site using a client computer system (e.g. laptop, tablet, smartphone), matching login session identifiers (Ticket IDs) are displayed on the client computer system and a mobile communication device uniquely associated with the user (e.g. the user's smartphone). Upon verifying that the two Ticket IDs match, the user accepts the Ticket ID displayed on the mobile communication device, which causes the login session by the client computer system to proceed. Identity verification proceeds largely in the background, through communications between an authentication server, service provider server, and mobile communication device, and involves minimal user input. Techniques are disclosed for reducing the incidence of inadvertent acceptance of incorrect Ticket IDs by users, and reducing system vulnerability to attacks.