Token authentication requires users to obtain a computer-generated code (or token) before they're granted network entry. Token authentication is typically used in conjunction with password authentication for an added layer of security. This is what we refer to as two-factor authentication (2FA).

What is a token used for?

A token is used to make security decisions and to store tamper-proof information about some system entity. While a token is generally used to represent only security information, it is capable of holding additional free-form data that can be attached while the token is being created.

Why we use token based authentication?

Token-based authentication is a protocol that generates encrypted security tokens. It enables users to verify their identity to websites, which then generates a unique encrypted authentication token.