When integrating LINE Login or developing a LINE MINI App, you may notice that you can get profile information such as an end user's user ID and display name. It might seem that you can send the profile information to your service's server ...

Hello! I'm Furuki, a technical writer. The LIFF SDK used in LIFF apps and LINE MINI Apps continues to gain new methods. In this article, I'd like to introduce the liff.requestFriendship() method, added on March 24, 2026, as one of my favori...