title: How to unlock Firefox with a password to get access to all my services like Facebook?
body: <p>I want a Firefox setting like whenever I open Firefox, It should act like it doesn't remember anything, no browsing history, no cookies, no passwords for any site.</p>
  
  <p>But as soon as I provide one password to Firefox, it should treat like "My Firefox" and sign in all the site for me like Facebook, GMail and others. In short I don't want to sign in all sites time and again, and at the same time I don't want Firefox to remember history.</p>
  
  <p>Is there any setting in Firefox?</p>