For Android users that have never used the Windows, Windows desktop, OS X, iPad, or Chrome version of LINE, Letter Sealing has already started to roll out to certain countries since September. Android users that have Letter Sealing enabled in settings or have it on by default can benefit from the security of Letter Sealing when sharing text messages, location information in a one-on-one conversation with another user. One caveat is that the other user must have also opted in to Letter Sealing in order for it to work. So keep in mind that you will need to convince other users to opt in if you wish to to enjoy the security of Letter Sealing when you are talking with them.
We plan to implement Letter Sealing into more types of messages and group chats as well. Keep posted to the blog for more information on new security features for LINE.
1: The current version of LINE does not display whether Letter Sealing is enabled or not. We are planning to add this in future versions.