Wiki Web Development Authentication

Authentication is the process of actually confirming the truth of an attribute, most likely the identity claimed by an user.

It might involve confirming the identity of a person by validating their identity documents, verifying the authenticity of a website with a digital certificate, determining the age of an artifact by carbon dating, or ensuring that a product is what its packaging and labeling claim to be. In other words, authentication often involves verifying the validity of at least one form of identification.

OAuth

Specific implementations