The user can block or restrict the reception of cookies in your browser options.
In Internet Explorer, click on “Tools” in the menu bar and then on the sub-item “Internet Options”. Finally, access the “Privacy” tab settings to change your preferences regarding cookies.
On Firefox, click on “Tools” in the menu bar and then on the sub-item “Options”. Finally access the voice settings “Privacy” to change your preferences regarding cookies.
Chrome, type “chrome: // settings / content” in the address bar (without quotation marks), and change the settings for cookies as you want.
On Safari, select “Preferences” and then choose “Privacy”. Under Block Cookie specify how Safari must accept cookies from websites.
If you use Safari on portable devices such as iPhone and iPad, you must instead act in this way: to go on the “settings” of the device and then find “Safari” on the left menu. From here, under “Privacy & Security”, you can manage the options Cookie.
To disable cookies external services you need to act on their settings: