Patent attributes
User authentication is performed using a system that includes a service provider system, a device provisioning system, a user computer, and a portable mobile device. The user computer requests the service provider system for access to a remote online service. The user computer receives sign-in information from the device provisioning system. The sign-in information is transferred from the user computer to the portable mobile device, which provides the sign-in information and a unique device identifier of the portable mobile device to the device provisioning system. The device provisioning system identifies a user associated with the portable mobile device, and informs the service provider system the identity of the user. The service provider system allows the user computer to access the remote online service based on the identity of the user provided by the device provisioning system.
