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These backup codes can be entered in lieu of your other, regular authentication method.

Follow the instructions below to generate new single-use codes. These instructions apply when using a mobile device for two-factor authentication.

Step-by-step guide

1. Navigate to the IST 2 two-factor authentication (2FA) website: https://uwaterloo.ca/2fa (right-click to open page in a new tab, if desired)

2. Under the section Select a second-factor tool and manage your devices, click "add a device or manage an existing device" (right-hand column) and log in.
   (If Duo automatically attempts to send a push to your mobile device, click

   "

   Cancel

   "

   at the bottom of the screen)

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3. Click "Enter a Passcode" but  but do not type in a passcode

4. In the bottom-right corner, click "Text me new codes"

5. This will send a text with a set of single-use codes to your mobile device

6. You will also receive an email to confirm/verify that new codes were requested.

Important notes

• Record this list of single-use codes and keep it somewhere safe but available to you

• Only use a code when your primary device and method of authenticating are not available to you

• Codes will remain valid for one year, after which they will expire and new codes will be required. These steps may be repeated when you have used all previous codes

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