---
title: "Authentication"
url: "https://symnexconsulting.com/glossary/authentication"
date: "2025-04-17"
author: "Matt Smallman"
category: "Glossary"
description: "Authentication is the call centre security process step in which a user's identity is confirmed. We check they are who they claim to be. It requires the use of one or more authentication factors."
---


# What is Authentication?

**In short:** Authentication is the call centre security process step in which a user's identity is confirmed. We check they are who they claim to be. It requires the use of one or more authentication factors.

There are three different types of authentication factor.

- Inherence Based Authentication – Based on something the user.
- Possession Based Authentication – Based on something the user possesses.
- Knowledge Based Authentication – Based on something the user knows.