Patent ID: 9171307
Filing Date: 2015-10-27
Classification: G06Q,H04L,H04M,H04W

Abstract:
1. A method comprising: performing following acts on a network server: receiving a communication from a mobile terminal operated by a client; performing a first authentication of the mobile terminal and/or the client; in response to the first authentication being successful, delivering a first service to the client; after delivering the first service to the client, sending an offer for a second service to the mobile terminal; receiving an acceptance message for the second service from the mobile terminal; performing a second authentication of the mobile terminal and/or the client; in response to receiving the acceptance message for the second service from the mobile terminal and to the second authentication being successful, delivering the second service to the client; wherein the first authentication and the second authentication use different authentication techniques; wherein the second authentication comprise: randomly selecting one of a finite number of telecommunication addresses by which the network server is accessible; using the randomly selected telecommunication address in an offer message from the network server to the mobile terminal; authenticating the mobile terminal and/or the client if a reply message to the offer message is received from the mobile terminal at the randomly selected telecommunication address.