PLEASE READ: To install the duo mobile app, your phone must have iOS version 15 or higher or Android version 11 or higher. If your app says your Duo is disabled, please try the instructions below.
Overview
If you received a new phone or your app is disabled and asking for a QR code from ID you will need to activate the duo mobile app.
Instructions for Students (current, incoming) - Choose a scenario
To setup your new device or to reactivate the duo mobile app, you will need to authenticate to do so. Please choose from the following scenarios that best fits your current situation in regards to Duo:
Activate the Duo Mobile App using DuoSOS
To activate duo using DuoSOS, please follow the steps below. Note: You will need your Bucknell ID card or know your proxy to use DuoSOS.
- Download and install the Duo Mobile app from your device app store if you do not already have Duo Mobile installed.
- Open a browser and go to a page like my.bucknell.edu or mail.bucknell.edu. You'll be prompted for your username and password.
- If you're already logged in to one of these services, switch to a different browser (Edge, Chrome, Safari, Firefox) or use an incognito/private browser.
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When Duo tries to authenticate, select Other Options

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Select Manage Devices

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In a new tab, go to duosos.bucknell.edu
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Log in with your Bucknell username, password, date of birth, and BUID. Note: you will need your Bucknell ID to get a code.
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Copy the code and go back to the Duo Security tab/screen

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You will need to verify yourself. Select Bypass code.

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Paste the Duo SOS Bypass code in the bypass code field box and select Verify.
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Once verified, you will see a list of devices on your Duo account. Select Add a device.

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Select Duo Mobile

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Enter your new phone number in the Phone number field
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Verify your number is correct and select Yes, it's correct

- Download the Duo Mobile App and select Next

- The next step will vary depending on what device you started the reactivation process on.
- If you are a student, faculty, or staff member, please update your phone number in B-Alert to receive important campus notices.
Add your Account to Duo Mobile App
The next step will vary depending on what device you started the reactivation process on.
If you started this process using a computer to do the first 10 steps continue with the steps below
- Switch to your smartphone.
- On your smartphone, open your Duo Mobile App (enable camera if asked).
- If you do not have an account listed click on Add Account (+)

- Click on Use QR code

- Go back to your computer and hold your smartphone up to the screen to scan the QR code.
- When the QR code is successfully scanned you will see an account pop up in Duo Mobile. Save the account.

- Congratulations! You have successfully set up the Duo Mobile App.
If you started this process using a mobile device to do the first set of steps continue with the steps below
- Select Continue

- Save the account

- Congratulations! You have successfully set up the Duo Mobile App.
I don't have a BUID or know my proxy number
If you are an incoming student, you do not have a Bucknell ID card, or do not know your proxy number please submit a Tech Ticket. Please provide a description of the problem and your mobile number. A staff member will follow up.
Note: Information Security requires us to verify identity. You may be asked to send a "security selfie" or provide a photo ID or government-issued ID. Additionally, those who have lost their ID will be asked to have it replaced.
Additional Information
How do I activate Duo Mobile on my phone (Student)?
Troubleshooting Duo issues
Duo Security FAQ
How do I self enroll in Duo Security?
How do I setup Duo push if I have been using SMS text?
How do I reactivate Duo when I get a new phone?
How do I add a new phone number or secondary device to Duo?
What versions of iOS and Android does Duo support?