When I open firefox (iphone), it knows who I am -- I see my history etc., even thoughI have not signed in to my account. Also, my kids, friends,neighbors, and anyone else using my phone, sees my history. (e.g. as suggestions under the address/query box). Where does Firefox get my identity? Where are my particulars stored (and whyI)? How can I stop this from happening? I.e. How do i sign off without deleting my account. (Like the way online banking accounts behave.)