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LINE Login

Let your users seamlessly log in to your app or website using their existing LINE accounts. Take advantage of LINE’s extensive user network and make it easy for new users to create an account for your app or website. Integrating LINE Login with your application is simple using our LINE SDK and web APIs.

Get started with LINE Login

What can you do with LINE Login?

LINE Login lets your users log in to websites using the Web Login feature or to log in to mobile apps using app-to-app authentication.


Use the Web Login feature to integrate your desktop or mobile website with LINE. Web Login uses the OAuth 2.0 protocol for authentication and authorization. For more information, see Web Login.

The LINE STORE website is integrated with LINE using Web Login.


The app-to-app authentication feature can be integrated into Android or iOS applications to delegate the task of authenticating users to the LINE app. Using this process, your users can log in to your app without entering their email address and password as long as they are logged in to LINE. For more information, see Developing for Android and Developing for iOS.

The LINE Rangers game uses LINE Login to let users easily log in with their LINE accounts.




Getting started with LINE Login


Create a business account at the Business Center.


Select LINE Login on your business account page.


Register for a Channel and start using LINE Login