- Navigate to the side menu, select More. Next, select Settings and privacy.
- Select Security and account access, and then select Security.
- Select Two-factor Authentication.
- Select Security key.
- If prompted, enter your password.
- A confirmation email will be sent to your registered email. Input the confirmation code in the field provided: Lastly, select Verify.
- Access the overview, then select Start.
- You can either input the key(s) into the USB port of your computer, or sync it over your computer’s Bluetooth or NFC.
- Follow the on-screen instructions to finalize the setup.
- When completed, your security key(s) will show up in the Manage Security Keys section below Two-factor authentication. At this stage, you are free to rename or delete your security key(s), and even add more security keys to your X/Twitter account whenever you like.