Knowledge Base

A USB security key is an external device that can store passkeys for multiple accounts. You plug it into a laptop or desktop for a quick, secure sign-in. This article walks you through setting up a passkey on a USB security key.### Before you start

Have your USB security key on hand. You’ll be asked to insert it partway through setup.

Step 1: Open your security info page

Go to https://mysignins.microsoft.com/security-info and sign in with your TMU account.

Step 2: Add a passkey sign-in method

1. Select Add sign-in method.
   
   

1. Choose Passkey.
   
   

1. Click Next on the next two screens.
   
   

Step 3: Save the passkey to your security key

Follow the instructions for your computer’s operating system.

> macOS

• 1. If you’re asked to save the passkey to the Passwords app, click Cancel. This keeps the passkey from syncing to Passwords so it can be saved to your security key instead.
  
  

• 2. In the next pop-up, click Use a phone, tablet, or security key.
  
  

• 3. When the prompt with a QR code appears, insert your USB security key into your device and touch it with your finger. Do not scan the QR code.
  
  

• 4. Follow the on-screen instructions to create a memorable PIN and complete setup. You’ll use this PIN whenever you sign in with your security key.
  
  

> Windows

• 1. Select Security key.
  
  

• 2. Enter a memorable PIN for your security key. You’ll use this PIN whenever you sign in with your security key.
  
  

• 3. Enter a memorable name for your passkey.
  
  

Step 4: Confirm your passkey was added

To confirm setup worked, check your security info page. You should see a new Passkey entry listed under your account.

How to sign in with your security key

• 1. When the sign-in prompt appears, click Choose a different passkey.
  
  

• 2. Select Security key, insert your security key, and enter its PIN to sign in. Depending on your model, you may also need to touch the fingerprint sensor on your security key.