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5. Spare keys

We highly recommend having more than one PUFido security key. This allows you to use one as your primary key and keep the other as a backup. A backup key ensures that if your primary key is lost, you can still access your accounts when you need them most.

To set up your backup FUFido security key, simply follow the same steps outlined above. We encourage setting up both your primary and backup keys at the same time for added convenience and security.

Updated on 28 Oct 2025

4. Setup Instructions for FIDO2-Certified Websites
6. Safety Guide
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