Do I need to worry about other people being able to see my chats?
We respect your privacy above all else, and your sent/received messages and other information are treated with the highest level of security. LINE has established strict internal rules to ensure that your messages are protected.
Nothing you send or receive can be viewed by LINE or any third parties not participating in a chat.
The Letter Sealing identify verification screen isn't appearing
If you're trying to verify your identity so you can use Letter Sealing on LINE for PC, but the verification code entry screen isn't appearing in LINE on your smartphone, restart the smartphone app and try verifying your identity again by referring to this Help article.
Letter Sealing is a feature that provides end-to-end encryption (E2EE) for chat messages. E2EE is a communication system designed so that messages saved on our servers are encrypted and cannot be read by anyone except the sender and receiver of the message.
Once the sender and receiver have both turned on Letter Sealing, they will be able to start sending messages with added security.
The following information will be encrypted:
• Text messages (not including messages sent through other services like YouTube)
• Location information
• 1-on-1 voice/video calls
Note: We plan to expand Letter Sealing’s functionality in the future.
If you use LINE for PC with Letter Sealing enabled on the smartphone version of LINE, you will be required to verify your identity the first time you send a message.
For information about verifying your identity to use Letter Sealing on LINE for PC, see this Help article.
Letter Sealing is now turned on by default when you download LINE. As part of our efforts to strengthen the app's security, we've made it so this setting can no longer be turned off.
If you've been using LINE since before these specification changes were made and have Letter Sealing turned off, you can protect your messages by turning Letter Sealing on manually from the smartphone version of LINE.
To turn Letter Sealing on:
1. Tap the Home tab > Settings > Privacy.
2. Turn ON Letter Sealing.
Tap here to go to the Settings menu from your smartphone.
To block messages from LINE Game apps:
1. Go to the Home tab > Settings > Notifications > Authorized apps.
2. Tap the game you want to block messages from.
3. Turn off Messages and/or Notifications. Note: - If you turn off Messages, you will not receive messages but will continue to receive any gifts your friends send you. - If you turn off Notifications, you will still receive LINE messages but will not be notified when they arrive.
Tap here to open the Authorized apps screen from your smartphone.