Do you know which browsers can log in to this website without a user name and password?
When you log in, you can tell our site to remember the browser. The login screen has a switched titled "Remember Me" or "Stayed Logged In". If you set that switch to YES, you should type in some text that helps you identify the device you are using so you can look it up in the list later.
To check which devices can login without typing in a user name and password, visit the account page then go to the "Manage your auto-logins" section. If your current browser can't access the website without a password, you can even add it on this screen.