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What To Do If You Lose or Can't Access Your Authentication Device
Learn how to regain access to your account if you have lost or damaged your primary authentication device.
Adding, Reactivating, and Removing Devices
Learn how to access your Duo account settings and manage your linked devices and phone numbers.
Link a Device or Phone Number to Duo
Steps to link your smartphone, tablet, or landline to Duo for multi-factor authentication.