checking users without regisrations in php
<p>is there any way to chechk users .i am working on a shoping cart..when annonymous user click on add to cart button  a list of products should be shown which he added to cart..and there is a link of check out below the selcted products carts ..when he clicks the check out button .his registration would be done then..
now the problem is how to know which anonymous user has selcted which product when he comes back after some time..
just like this way..
<a href="http://www.daraz.pk/cart/" rel="nofollow">http://www.daraz.pk/cart/</a></p>
