OTP C300 token offers strong two-factor authentication with challenge-response capabilities in the token-not-present mode, which is the effective solution to the problem of vulnerability against hacking of man-in-the-middleware. Simply pressing the keypad user first input the correct Challenge phrase, which activates the OTP C300 token to generate Response and display the one-time password. And then user may enter the dynamic password into the Web-based form or network application to make secure authentication.

OTP C300 complies with OATH Challenge Response Algorithms (OCRA) to provide a real-time two-factor authentication. The high contrast LCD and larger keypad input make OTP C300 obtained more user satisfaction.