What is an OTP - One-time password? A one-time password (OTP) is an automatically generated sequence of numeric or alphanumeric characters that will authenticate a user for a single login or transaction. It is used in a multifactor authentication (MFA) process to secure access to data.

What do you mean by one-time password?

One-time password (OTP) systems provide a mechanism for logging on to a network or service using a unique password that can only be used once, as the name suggests. The static password is the most common authentication method and the least secure.

How long is a one-time password?

OTP security tokens are microprocessor-based smart cards or pocket-size key fobs that produce a numeric or alphanumeric code to authenticate access to the system or transaction. This secret code changes every 30 or 60 seconds, depending on how the token is configured.