Yubikeys (or at least some models) can be configured with multiple different OTP...

		greggyb on Aug 20, 2021 \| parent \| context \| favorite \| on: Facebook hacker beat my 2FA, bricked my Oculus, an... Yubikeys (or at least some models) can be configured with multiple different OTP implementations. Yubico's own OTP implementation behaves as you have described. It is not a guarantee that generating an OTP from a Yubikey means you have generated a Yubico OTP.