Originally Posted by kale73

Suppose you and I are sitting in the same UC and are both using the Club's wifi (I'm making what I consider to be a safe assumption that the UC doesn't assign each device a public IP address.). I "observe" the PNR and name on a reservation you made. I then log in and use that information to change something in that reservation. Would the UA system not then record the same "public" IP address (presumably assigned to the Club's wifi) for both transactions?