This is so cool. What I am worried about using fingerprint is that they are either stored on a laptop or a smartphone. You have to trust a lot of hardware, the

This is so cool. What I am worried about using fingerprint is that they are either stored on a laptop or a smartphone. You have to trust a lot of hardware, the whole software stack made by many third parties to protect that data. With this key, that's already many less parts to verify and trust. Let's hope it's not easily reverse-engineerable and the key is never shared with Yubikey.