Ref

1. JWT
2. JSON Web Token Tutorial: An Example in Laravel and AngularJS

Refs

1. OAuth2.0
2. What is OAuth2.0?
3. JSON Web Tokens
4. OAuth2.0原理图解：第三方网站为什么可以使用微信登录

What is OAuth 2.0 ?

The industry-standard protocol for authorization.
This specification and its extensions are being developed within the IETF OAuth Working Group.