To protect your privacy, use of these tools is limited.
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Your choices about cookies
You're always free to decline cookies if your browser permits this. However, if you decline cookies, you may not be able to use certain features on the website, and you may be required to reenter your password more frequently during a session.
More about cookies and browser settings
How do cookies work?
Flash cookies are another kind of cookie we use for security. When you sign in, we create a Flash cookie that gives your computer a unique ID. The next time you sign in, the Flash cookie confirms your computer as a trusted source.
Do I need to change my web browser's cookie settings?
Probably not - most cookies are »session cookies« that automatically disappear from your hard drive once you sign out or close your web browser. The cookies that stay on your computer identify you to the site when you return, so you can continue where you left off. Without the cookie file, we wouldn't recognise you when you came back, so you'd need to re-enter your data each time.
Accepting or deleting cookies in your web browser
Each type of web browser has its own way of managing cookies. To make sure features work properly, check that your browser is set up to accept cookies, and be familiar with how your browser manages cookies.
To learn more, consult your browser's help. We've provided links to the relevant pages for some common browsers.
Managing and deleting cookies
Important: You should only need to delete cookies from your computer if you receive an error message saying that your browser is rejecting cookies.