A one-time password (OTP) is an extra single-use password required in addition to your regular password to log into a computer or online service. The computer or service generates a one-time password for you on the fly to add an additional layer of authentication to help prevent unauthorized users from logging into other people’s accounts or stealing their credentials. OTPs are a first step in what’s called two-factor authentication. They’re becoming more common as cybercriminals purchase usernames and passwords online to commit ID theft.

One-Time Password Definition

A one-time password is a string of characters that can be used to authenticate a user for access to a laptop computer, desktop computer, or online service. Most OTPs consist of six digits sent in a text message to the user’s mobile phone, tablet, or email address. They’re normally used in conjunction with a traditional username and password as a way to bolster cybersecurity.

Some OTPs use more than six numbers or strings of alphanumeric characters. OTPs are normally restricted to a single use (thus the name) and frequently expire after a short time. SMS text messages are commonly used to send OTPs to users.

Read more at – usnews: What Is a One-Time Password (OTP)?