What is one time password token?

A one-time passWord (OTP) token is a security feature used to authenticate users by generating a temporary, unique code that is valid for only a single transaction or login session. These tokens enhance security by ensuring that even if a passWord is compromised, unauthorized access is prevented since the OTP changes with each use. OTPs can be generated by hardware tokens, software applications, or sent via SMS or email. They are commonly used in two-factor authentication (2FA) systems to provide an additional layer of protection.