August 2016
Beginner to intermediate
665 pages
14h 11m
English
OAuth2 is an open authentication and authorization standard designed to allow resource owners to give clients delegated access to private data (such as wall posts or tweets) via an access token exchange handshake. Even if you do not wish to access the private data, OAuth2 is a great option that allows people to sign in using their existing credentials, without exposing those credentials to a third-party site. In this case, we are the third party and we want to allow our users to sign in using services that support OAuth2.
From a user's point of view, the OAuth2 flow is:
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