Stay secure and connected! In the event that your primary Duo device is unavailable, we strongly encourage you to enroll more than one device and/or proactively generate bypass codes.

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Choose a Primary Device

smartphone or tablet used with the Duo Mobile app is the fastest and easiest way to use Duo. Don't own a smartphone or tablet? See other trusted Duo devices

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Generate and Use Bypass Codes

Generate a set of 10 single-use bypass codes (valid for one year). The trick is to generate your codes BEFORE you need them. With Duo, as with most things, it pays to be prepared! Learn how to Generate and Use Bypass Codes.