If you have a joint account owner, can they log into your account even if they don’t know the password? I signed up for a joint account with my mom when I was 17 I guess...? I’m saying “I guess” because at the time I didnt understand anything the banker was saying at that time. I know on my statements it says she is a joint owner. I don’t mind, I have nothing to hide. Although I never gave her my login, does she still have access somehow?