the usage of a preposition phrase

The differentiation between home network and visited network is technically given by the type of subscriber entry in a specific network. If a subscriber has no entry in the home subscriber register of the network (e.g. http://en.wikipedia.org/wiki/GSMcore_network#Home_location_register.28HLR.29 in GSM networks or local customer database in WLANs), the required subscriber data must first be requested by the visited network e.g. from the subscriber's home network in order that the subscriber can be authenticated and any authorization for using the network services can be checked.

I'd like to know whether "for using~" modifies "any authorization ."
Thank you in advance for your help.