Explain JWT like I’m five

Scenario 1: (Not JWT)

I’m at a restaurant and I order a beer. This particular restaurant takes age verification very seriously. So the waiter asks to see my license. I provide it, but then he goes and gets a phone. He calls the DMV, waits on hold for a bit, and asks them to verify the license details. Once he talks to the licensing authority and they confirm my date of birth, then he goes and gets my beer.

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