I wonder what the difference is here between a “FIDO Security Key” and an “NFC-enabled Mobile Security Key”
Hardware TOTP vs. HOTP?
Time vs counter/hmac value based code generation… both types of keys can do that…
Oohhhhh! It says right there… if you install the id.me mobile app you can use a security key with your phone to authenticate with an NFC security key on your phone… even if you’re authenticating on a desktop maybe!