# OAuth2

# Authentication by using Plugin

  • First, Go to **Tools** > **NuGet Package Manager** > **Package Manager Console**. [enter image description here](https://i.stack.imgur.com/YNgi3.png)
  • Enter this Command "**Install-Package Plugin.Facebook**" in Package Manger Console. [enter image description here](https://i.stack.imgur.com/x22kM.png)
  • 1. Now all the file is automatically created.

    enter image description here (opens new window)

    Video : Login with Facebook in Xamarin Forms (opens new window)

    Other Authentication by using Plugin. Please place the command in Package Manager Console as shown in Step 2.

    1. Youtube : Install-Package Plugin.Youtube
    2. Twitter : Install-Package Plugin.Twitter
    3. Foursquare : Install-Package Plugin.Foursquare
    4. Google : Install-Package Plugin.Google
    5. Instagram : Install-Package Plugin.Instagram
    6. Eventbrite : Install-Package Plugin.Eventbrite