We've added new parameters and properties to LINE Login v2.1:
ui_localeslets you specify the display language and script for LINE Login.
amrspecifies the authentication methods used in authentication. This corresponds to the OpenID Connect 1.0
amrproperty is automatically added to all LINE login v2.1 enabled channels, so no additional development work is required.
See also Integrating LINE login with your web app. If you haven't integrated LINE Login yet, we hope you'll consider doing so now.
New or changed LINE Login functions may cause changes in the structure of the payload JSON object. These changes may include added properties, variations in property order, and added/removed white space and line breaks. Make sure your implementation can handle both current and future payload data objects.
Any functionality we offer may be changed without notice. However, we'll try notify you in advance if we believe that the change will significantly affect developers.