Duo Mobile Activation Code: Adding Mobile Device To Your Duo Account

Duo Mobile Activation Code: The two-factor authentication service (2FA) in duo mobile activation code is used to secure login attempts to various campus services and applications. These duo user accounts are the ones your end-users utilize to log into duo-protected services and applications with two-factor authentication. The duo mobile activation code is an object that represents the user of the applications and services to protect with the duo.

by Sangeetha N | Updated Sep 28, 2021

Source: Guide to Two Factor Authentication- Duo Security

Duo Mobile

Duo Security is a vendor of cloud-based two-face authentication services. The duo service is free for personal use for ten different users. There are many links that are there for business people and enterprise users. Duo’s two-factor authentication system can be integrated with websites, VPN, and cloud services. This service can be set to work in conjunction with a smartphone, personal computers, landlines, and security tokens. 

Duo two-factor authentication method

  • One tap authentication using duo mobile app

  • One time passcode (OTP) generated by duo mobile app

  • One time passcode delivered to any SMS enabled phone

  • Phone callback to any phone 

  • One-time passcode generated by an OAuth compliant hardware token. 

Duo Mobile Activation

To remove the duo mobile from your mobile/tablet or get a new phone but keep the same number click the appropriate link below for instructions to reactivate the duo mobile in your device. 

  • Reactivate duo mobile on your mobile phone

  • Reactivate duo mobile on your tablet. 

Reactivate Duo Mobile on your Mobile Phone

  • First sign into my.fsu.edu

  • Under my.fsu links, click myFSU management and select update DUO.

  • Click my settings and device.

  • Search using a device and a links.

  • Go down, find the device that you are reactivating and click device options.

  • Click reactivate duo mobile

  • Select the type of device you have and click continue 

  • Open your phone’s app store (apple play store or google play store) and download and install the duo mobile app

  • Click I have duo mobile installed

  •  The barcode and set of instructions will appear on the Mobile. If your phone does not have a camera or you are unable to scan the barcode, continue to the next step

  • If you cant scan the barcode, click the link that says or have an activation link mailed to you

  • Enter the email address which you gave and click send email

  • On the phone, you are activating, check your email for your messages from duo security and open the link in the mail. If your phone asks which app to use to open the link select duo mobile.

  • Duo mobile will be activated

  • Click continue to finish adding your device. 

Reactivate Duo mobile on your Tablet

  • Sign into my.fsu.edu

  • Under my. fsu links click my.fsu identity management and select update DUO

  • Click my settings and devices

  • Verify using an existing device method

  • Scroll down and find out the devices you are trying to reactivate and click device options

  • Click reactivate duo mobiles

  • Open your tablet app store ( apple play store or google play store) and download and install the duo mobile app 

  • Click I have installed duo mobile

  • A barcode and set of instructions will appear

  • If you cannot scan the barcode click the link that says or have an activation link emailed to you instead

  • Enter your email address and click send mail

  • On the tablet, you are reactivating check your email from duo security and open the link in the mail

  • Duo mobile will be activated

  • Click continue to finish adding up your device.  

Duo Activation Code

  • Login to duo

  • Click the button to send the activation code - You will receive a text message with a link to the application. Click on the link to install the duo application

  • You will also receive a text message from the activation link. Once you have installed the duo click on this link to register your phone with the duo. 

Duo activation code

Duo mobile

Duo mobile activation


Disclaimer: The above information is for general informational purposes only. All information on the Site is provided in good faith, however we make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability or completeness of any information on the Site.

Duo Mobile Activation Code - FAQs

1. Describe Duo Mobiles?

Duo Security is a vendor of cloud-based two face authentication services. The duo service is free for personal use for up to 10 users additional options are available for business and enterprise users.

2. How many authentication methods are there?

There are 5 steps for authentication.

3. List the five steps for authentication methods?
  • One tap authentication using duo mobile app
  • One time passcode (OTP) generated by duo mobile app
  • One time passcode delivered to any SMS enabled phone
  • Phone callback to any phone 
  • One time passcode generated by an OAuth compliant hardware token. 
4. How many methods are there in mobile activation?

There are 2 methods.

5. List out the 2 methods for mobile activation?
  • Reactivate duo mobile on your mobile phone
  • Reactivate duo mobile on your tablet. 
6. How many types are there for activating a code?

There are 3 steps.

7. Give a detail view about activating the code?
  • Login to duo
  • Click the button to send the activation code - You will receive a text message with a link to the application. Click on the link to install the duo application
  • You will also receive a text message from the activation link. Once you have installed duo click on this link to register your phone with duo.

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