# Authentication

Proving who you are.

## What is **Authentication**?

**Authentication** is proving who you are: logging in with a password, a token or an API key.

Level: Journeyman · [More Web Development terms at this level](https://www.ask-codey.com/glossary/subjects/web-development/journeyman)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/authentication