Security token (physical or app) will remove this feature as the onetime password supersedes the other security feature. It also grants you 1 free teleport location of your choice.

Just make sure if you use the app (recommended since physical tokens are often in short supply, can be lost, damaged, etc. and cost money) that you record/ remember your retrieval code/ password to remove the app from your account. Occasionally updates to your phone/ tablet can mess with the app (I've heard), but mostly you will need it if you get new hardware (which will happen eventually, obviously).