When you visit a web site, it may send a small file to your computer or device called a cookie. Cookies contain pieces of information pertinent to your browser and your browsing session. The two main different types of cookie that may be used are:
You are not obliged to accept cookies and may modify your browser so that it will not accept cookies. The browser you use not only allows you to see the cookies saved on your computer, but also to control their use. You can control them by allowing them, deleting them individually or deleting all of them. You can also set your browser to not accept cookies altogether. Do bear in mind that if the latter option is selected, many websites will not function properly or at all.
It may be possible to set your browser to not accept cookies and ask for your consent before each cookie is set on your device. This gives you control over what is set on your device, however has the drawback of slowing down your browsing experience.
There are different levels of control too. You are able to prevent just third party cookies being deployed, and some even allow you to block specific companies you do not wish to deploy a cookie, instead of selecting all companies. Please refer to your device's web browser help for details.