Use a hardware security key such as a YubiKey
A hardware key is a small physical device you tap or plug in to log in. It is the strongest common second factor and is well worth it for high-value accounts.
- Buy a reputable key (for example a YubiKey) that matches your devices — check it has USB-C, USB-A, or NFC as you need.
- Buy two if you can: one to use and one to lock away as a backup, so a lost key does not lock you out.
- In the account’s Security settings, choose to add a security key as a sign-in method.
- Follow the prompts to insert or tap the key and set a PIN if asked.
- Register the backup key the same way before you finish.
- Test signing in with the key, then store the spare somewhere safe and separate.
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