...name !
Yes, when a user connect, log in, I can have his name.
I can save some element on a SQL so that, when he comes back, I can retrieve those elements.
But, if another facebook user with the same name play the same game.
only with the name, it will retrieve the informations of the first one.
How can I find another element that will make my user unique ?
Thanks... hope I'm clear enough...