What is Yubico OTP?

otp slotThe YubiKey's OTP application slots can be protected by a six-byte access code. Once a slot is confured with an access code, that slot cannot be reconfured in any way unless the correctYubico OTP is a simple yet strong authentication mechanism that is supported by the YubiKey 5 Series and YubiKey FIPS Series out-of-the-box. Yubico OTP can be used as the second factor