• Formal
  • In computing, authentication is the process of verifying the identity of a person or device, preventing unauthorized access and misuse of personal information.
  • Practical
  • Authentication is the act of confirming the truth of an attribute of a single piece of data (a datum) claimed true by an entity. In contrast with identification which refers to the act of stating or otherwise indicating a claim purportedly attesting to a person or thing's identity, authentication is the process of actually confirming that identity.
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