I am running a hotspot and want to run adsense ads on my hotspot's splash page (the page they see everytime they log in) The thing about hotspots is, everyone who's on the network is seen from the outside world as being on one IP address. Are IP addresses the only way google differentiates users? or do they use other things as well (browser cookies, mac addresses?) Will my account be deleted? should I use a different ad network?