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What does "authentication" mean in programming?
authentication is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The process of verifying the identity of a user or system. Authentication answers the question 'Who are you?' Common methods include passwords, OAuth, and biometrics.
Example
"The app uses Google OAuth for authentication so users do not need a separate password."
Word forms
| Form | Type | Meaning | Example |
|---|---|---|---|
| authenticate | verb (infinitive) | To verify the identity of a user or system | "The user must authenticate before accessing the dashboard." |
| authenticated | past tense / adjective | Having successfully verified identity | "Only authenticated users can access this endpoint." |
| authenticating | gerund | In the process of verifying identity | "The middleware is authenticating the request." |
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