How do I use my security key for authentication when logging in? August 25, 2021 16:38 Updated Simply plug in your security key to your device’s USB port (or wirelessly connect it) and tap when prompted. Related articles I’ve lost my security key but added an additional security key to my Internet Identity, how can I log in? What is a physical security key? How does a physical security key work? What are some Internet Identity security key best practices? How do I add more devices to my Internet Identity? How do I know if my device supports Internet Identity? Comments 0 comments Please sign in to leave a comment.