# Sign In with Duo 2-Factor Authentication
This page assumes you have **previously set up** Duo 2-Factor Authentication with your **smartphone** or a **key fob**. If you have not, please see our [Duo Set Up Guide](https://kb.mlml.sjsu.edu/books/security-anti-malware/page/set-up-duo-2-factor-authentication).
##### **First, sign in to SJSU Normally:**
- Navigate to the [**SJSUOne** ](https://one.sjsu.edu/)page, or any other page where you use your SJSU login credentials (eg. SJSU Email):
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[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/SJSUOne-Sign-In.png) |
- **Sign** **In** with your SJSU ID Number or SJSU Email Address and Password:
- - Note: If you are already logged in, you may want to use your browser’s incognito/private mode so that you do not have to log out and back in again.
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Your browser will now bring up the Duo 2-Factor Authentication page, the method you use to sign in with Duo 2-FA will vary based on which option you select and whether you are using a smartphone or a key fob.
These methods are outlined below.
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#### **Sign In with a Push Notification:**
- To sign in with 2-factor Authentication from your computer or other device you are signing in with, click **Send Me a Push**:
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- Press **Approve** on your phone:
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#### **Sign In with a Passcode:**
- Alternatively, click **Enter** **Passcode:**
- Entering a passcode may be helpful in situations where the push notification won’t get through, for instance when your computer has a connection to the internet but you have no data service (cell or WiFi) on your phone.
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- Enter the **passcode** from Duo on your phone into the field on the device you are signing in with:
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#### **Sign in with a Key Fob Passcode:**
- On the Duo **Sign in** page, where it says **Device**, make sure the device selected is **Token**:
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[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/Duo-Devices.jpg) |
- Press **Enter a Passcode**, and press the single **Button** on your **Duo Key Fob**:
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[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/Duo-Devices-Passcode-highlight.jpeg) |
[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/Duo-Fob.jpg) |
- Enter your **One Time Password** from the Key Fob into the passcode field and press **Log In**:
- You have about 15 seconds to enter the passcode.
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[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/Duo-Fob-OTP.jpg) |
[](https://kb.mlml.sjsu.edu/uploads/images/gallery/2019-04-Apr/Duo-Token-Passcode-Login-highlighted.jpeg) |