This is a step in the right direction for security…allowing you to use a USB device to lock / unlock your accounts.  If you don’t use two step authentication right now, you should really think about it.  Set it up, turn it on and select the “remember this device” for your home computers. This way it won’t be a hassle if you’re using trusted devices but it will save you later if anyone ever tries to break into your account.

Strengthening 2-Step Verification with Security Key