A cookie is a small text file which is sent to the user's browser by the web server and authomatically stored in the device so that the the website can check the users' previous activity and "recognise" them.
Cookies can remember other personal information such as the user's password so that it does not need to be written every time the user visits the same site, or preferences relating to the settings of a website (language or screen resolution, among others).
Cookies are essential for internet's functioning, providing countless advantages in the provision of intereactive services, making the website's navigation and usability easier. Cookies can not harm your device and, while activated, they help to identify and solve errors.
In short, a cookie is a succession of browsing information that is stored in the user's device and that websites detect and recognise in order to "remember" this browsing activity.
Internet Explorer 8 and superior:
Safari 2 and superior:
Opera 10.5 and superior:
FireFox 3.5 and superior:
Google Chrome 10 and superior: