View login history in the game: find "Settings" in the main menu and "Account" in the settings, and you can view the specific personal information of the account, including login history. The login history will show the time and place of the last login. If there is any abnormal login record, you need to change the password in time.
Check the login record of Mihoyo website: you need to log in to Mihoyo website, find the account settings in the personal center and select the security center. At the bottom of the security center, you can view the game login log, including all login records, such as login time, login equipment, IP address, etc. If an abnormal login record is found, you can unbind or modify the password.
View the login record of the bound mailbox: If the mailbox is bound when registering an account, you can also view the login record through the mailbox. After entering the mailbox, search for the keyword "original God login record" or "original God account security" to find the email with login record. This method is more troublesome than other methods, but it can find account problems more timely.
The above are several ways for Genshin Impact to check who has logged into your account. I suggest you choose one of them to check. At the same time, we should also pay attention to protect the security of personal accounts, modify passwords, unbind or change bound mailboxes in time to protect personal privacy and account security.