Recently, Facebook rolled out a new security feature designed to keep your account out of the hands of hackers and identity thieves. You can now purchase a USB key that will only allow someone with the key to access your account. This is a lot more secure than the regular two factor authentication as SMS messages can be intercepted.
However, there are drawbacks to using this method of security. The first is that it only applies to using Facebook on your PC, a mobile version of this method has yet to be implemented. The second problem is that it will only work with the Chrome and Opera browsers, so if you’re a Firefox or Explorer user, you’re out of luck. Lastly, if you lose the key you’ll be locked out of your Facebook account.
Unless you use Facebook for business purposes or are some kind of public figure you can probably get away with just the regular two factor authentication with no problem. However if your livelihood revolves around your Facebook, the security key may not be such a bad idea.