A computing system, method and product comprising a server, a mobile device comprising a client interconnected with the server via a data network, the client identified by a credential which is unavailable to the client and an intermediate node interconnected to the client and the server via the data network wherein the credential is available to the intermediate node. Upon reception of a service request from the client at a first server address the server redirects the client to transmit the service request to a second server address via the intermediate node together with a token, wherein the intermediate node appends a credential identifying the client to the redirected service request and the token and relays the redirected service request, the token and the credential to the second server address.