From MTGOX notice:


From what I understand about Yubikey, there are two modes of operation... OTP mode where the password changes all the time... and "Static" mode where a frozen OTP is output when you press/hold the button.

While I'm sure the OTP mode is "locked into MTGOX", the "static mode" will work for you in other cases, as long as you append the 44 digit "frozen" string with your own easy to remember password. This is pretty close to two-factor authentication.

But for $25, you can get your own yubikey (from yubico) and get the OTP mode for your own use and possibly be able to use the "almost two-factor authentication" at MTGOX.

I've recently ordered 3 of them from Yubico for me and my family.