What you're describing is not two-factor auth, it's more like a recovery question.
Two-factor auth involves entering a temporary code along with your password. The temporary code comes via SMS or a special mobile phone app. Google, Facebook, and Dropbox are examples of free websites that offer this.
Two-factor auth involves entering a temporary code along with your password. The temporary code comes via SMS or a special mobile phone app. Google, Facebook, and Dropbox are examples of free websites that offer this.