A system, devices and method for authenticating a user requesting access, through a computing device connected to a network, to an on-line resource hosted by a server in communication with the network. The system, devices and method employing an authentication server and a mobile communications device in communication over a wireless network. The authentication server forwarding an authentication to the mobile communications device. Optionally, the authentication server also returning security information related to the authentication in response to the request. The mobile communications device operative to receive and process the authentication, and forward the processed authentication to the computing device over a short-range communications link.