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‫(light playful music)

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‫Welcome back to one of the most important,

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‫and also most advanced sections of the entire course.

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‫And in this one, you're gonna learn how to implement

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‫authentication, authorization, and security.

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‫So, authentication and authorization

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‫is all about users signing up

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‫and logging into or applications

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‫and allowing them to access certain protected parts

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‫of the app that are not accessible to non-logged in users.

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‫So that's really cool,

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‫and it makes the app seem even more real world, right?

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‫So to implement authentication,

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‫we're gonna use a very modern technique

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‫called JSON Web Tokens,

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‫which are actually perfect for the API that we're building.

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‫And now I can't wait to show you how it all works.

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‫(light playful music)