This information allows you to identify as a specific user and allows you to save your personal preferences, as well as technical information, such as visits made or the specific pages you visit.
Those users who do not wish to receive cookies or want to be informed before they are stored on their computer can configure their browser for this purpose.
Most of today’s browsers allow the management of cookies in 3 different ways:
The cookies are never accepted.
For each cookie, the browser asks the user if it should be accepted.
Cookies are always accepted.
The browser may also include the possibility of specifying which cookies have to be accepted and not. Specifically, the user can choose one of the following options: reject cookies from certain domains; reject third-party cookies; accept cookies as non-persistent (it is deleted when the browser is closed); allow the server to create cookies for a different domain. In addition, browsers can also allow users to view and delete cookies individually.
Availability of more information about cookies at: http://wikipedia.org/wiki/Cookie