Option to tie your account to multi IP

[Beetle]

You could always use the security token/app to stop this from happening. I believe it actually tells you that when you receive your email.
It's only an extra 5 seconds of your time to login, worth it.

Cant because me and my brother share his account. I have my own account but he chooses not to register his 1 type password and would cause issues trying to take control of his account from my house up the street.

edit:
Do they allow you to register 2 1 time password tokens on the same account? That way I can use my token and he could use his own?