TierraNet will generate a set of one-time-use back-up codes when requested, which will allow access on a one-time basis in the event that a two-step authentication method is not available. (e.g.: A one-time use code may be helpful if the mobile phone configured to receive text messages is not nearby.) Please save these codes.
To generate back-up codes, you must have another method active. Then proceed to click the Add Back-Up Codes button.
To regenerate back-up codes, click the Regenerate button. Note, this will cause any and all existing back-up codes to be invalid.
Once two-step authentication has been verified, each subsequent attempt to log-in to your TierraNet account will require both correct username and password credentials, as well as a second authentication method.