PIN number to protect passwords/autofill info

Too much info is available to someone who can access the browser (saved passwords/autofill information). It would be nice if it was protected in the browser, but still not overly time consuming to use. Something like a 4 digit pin prompt before displaying any saved passwords or autofilling logins and personal information.

nice @DumpTruck

i guess make primary password would be good same as firefox

it protect all the saved password and it ask you for it only once per session