There are so many physical security keys out there. Which one should I use? August 25, 2021 16:38 Updated Anything that supports Fido U2F will work, such as YubiKey® and the Kensington Verimark Fingerprint Key. Related articles Why am I being asked to enter my PIN upon logging in to Internet Identity using my YubiKey®? How do I add more devices to my Internet Identity? I just set up my Internet Identity using my physical security key. I have another one that I wish to use as a backup in the event I lose my current one. Why do I need a special / late-model hardware to use Internet Identity? What are some Internet Identity security key best practices? Comments 0 comments Please sign in to leave a comment.