We have released LINE Login v2.1 which provides new features to make it easier for you to implement a login feature to your application. The new version adds support for the OpenID Connect 1.0 specification which is an identity layer on top of OAuth 2.0.
Here are some of the key changes.
# ID tokens
With LINE Login 2.1, you'll be able to get ID tokens which contain user profile information when you retrieve the access token. This means that you no longer need to send a separate request to retrieve a user's profile information.
For more information, see ID tokens.
# Login sessions
In version 2.1, when users are redirected to the authorization endpoint, we'll be able to check the login session to determine if the user is logged in to LINE or not. If users are logged in to LINE and their browsing session is valid, they will not be required to enter their email and passwords to log in.
For more information, see Authentication process.
# Updated endpoints
We have updated our authorization endpoints where you can use the new version 2.1 features. You can find more detailed information on the following pages.
Note: You'll still be able to use our LINE Login v2 endpoints.