I'm trying to make a script that doesn't require user registration that allows anonymous users to upload an image to be displayed. The problem i'm running into is the possibility of flooding. I was thinking of using sessions, but that's easy to circumvent. I don't want to use cookies because, again, those are easy to circumvent. IP tracking is another not-so-great method because mainly of AOL. I need to know how to single users out who connect through a proxy. Help is appreciated. Thanks 🙂