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How to remove or replace a hardware token.
What to do with a former employee's Duo hardware token.
How to reactivate your phone for Duo.
How to use Duo with an offline cell phone.
How to add, remove, reactivate or deactivate Duo devices.
How to replace a phone used for Duo two-step authentication.
Duo hardware tokens are a good option if you don't have a smartphone, or if you need a second Duo device.
Get signed up for Duo two-step login!
How to use Duo with an Apple Watch.
What to do if the Duo sign-up process fails.