Here's a brief comparison between OTP (Authenticator) and U2F: https://www.yubico.com/2016/02/otp-vs-u2f-strong-to-stronger/ https://www.yubico.com/2016/02/otp-

Here's a brief comparison between OTP (Authenticator) and U2F: https://www.yubico.com/2016/02/otp-vs-u2f-strong-to-stronger/ https://www.yubico.com/2016/02/otp-vs-u2f-strong-to-stronger... One big advantage of U2P is protection against phishing and mitm attacks, which OTP is vulnerable to. There is more information here: https://developers.yubico.com/U2F/Protocol_details/Overview.html https://developers.yubico.com/U2F/Protocol_details/Overview....