Remember the selected language from the language selector wi

Hello,

We are using Sitefinity 4.2 in a multi language website, is there a way to remember the selected language of the user from the language selector (stored in a cookie for example) so the website can be redirected automatically to this language in the next visit of this user?

If no, how can we extend the built-in language selector to remember the selected language of the user so he doesn't have to manually reselect the required language every time he visits the site?

We also wanted to ask whether there is way to choose a default language for the user based on his browser settings.

Thanks.

I also need to know this....