Cookies in and of themselves do not personally identify users, although they do identify a user’s computer.
Most browsers are initially set to accept cookies. You do not have to accept cookies and you should read the information that came with your browser software to see how you can set up your browser to notify you when you receive a cookies, this will give you the opportunity to decide whether to accept it.
If you chose to disable cookies you may not be able to access certain features of a particular website. If you would like to find out more information about how to change your preferences you may do so by following the instructions here.