I am trying to create a shopping card that it will create a unique user for user ( for example: date+random number )when he tried to access to shopping card and no matter how many time he/she moved back and forwad , that unique number (just create one time ) and no allow keep assign unique id ( so it need to save in some place ) .
So where or how to put the unique id assign for each user.
Perfect example: Amazon ....www.amazon.com
, you can see that after the home.html : http://www.amazon.com/exec/obidos/subst/home/home.html/002-8684941-3777048..appears
the source id which it is unique and it will keep for u ..while you move back and forward.
I would appreciate any help!!
Thank you very much.