Logging In with Apple ID
When your KKBOX account is connected to Apple ID, you can log in using the [Log In with Apple ID] button.
Your question was different? You can see
1. Log in Member Account.
2. Choose [Security].
3. When your KKBOX is linked to a Facebook and/or Apple account, you will find the information under 【Linked Accounts】.
※【Linked Accounts】 will not appear if your KKBOX is not connected to any social media.