How to identify unique user?
- by smotchkkiss
How can you determine if a user is unique or not?
I understand there are many ways to do this using cookies, but what about methods that don't use cookies?
For example, go to Urban Dictionary and click one of the up/down vote buttons. Even if you delete your cookies and come back to the page, you will not be allowed to cast a vote on the same definition.
How do they do this?