Cookies are very useful and do lots of different jobs which help to make your experience on websites as smooth as possible. For example, they let you move between web pages efficiently, remembering your preferences, and generally improving your experience (see below for more examples). They can also help to ensure that adverts you see online are more relevant to you and your interests.
They are referred to as session or persistent cookies, depending on how long they are used:
- Session cookies only last for your online session and disappear from your computer or device when you close your browser.
- Persistent cookies stay on your computer or device after the browser has been closed and last for the period of time specified in the cookie. These persistent cookies are activated each time you visit the site where the cookie was generated.