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You'll be authenticating with a a lot of systems during your day to day. Authentication essentially comes down to who you are. There are a tonne of different ways to authenticate to a system. We'll cover some of those here.

There are things we call "factors" that go into the authentication process:

  1. Knowledge: something the user knows
  2. Ownership: something the user has
  3. Inherence: something the user is

Combined we get authentication.

Key Points#