The two system sign in does not work sensibly. When logging out on my laptop it requirs a code to be sent to my smartphone every time i try toreturn into gmail. This occurred over four times in one session on my laptop. This is rediculous. What is the point of using a password if the password does not get you into the account when using it. Security read stupidity!! I got locked out because of too many attempts at using the pass code sent. system sent me three of one and then a different one.