I'm sure it's possible to fingerprint devices and/or IP's etc. However, I very much dislike that sort of thing. Just seeing a "Log in with facebook" button will make me lose ALL interest in a game, for example. 
A better idea, in my opinion, would be to fix the core issue: ANY member of a town, no matter how new or low ranked, having the power to utterly destroy it.
			
		

 
  but api giving away people IPs won't help in that.
 but api giving away people IPs won't help in that.



