Yes, it can be set to lock. Right-click the SunLogin icon on Windows taskbar and choose Lock SunLogin from the menu. The Lock Setting dialog box appears. Then enter the predefined lock password and click OK. The client is locked. The shortcut keys to lock the client are Ctrl + Shift + L. Alternatively, you can choose Settings > Security to set lock or change the lock password. If the option Automatically lock client is selected, the system will automatically lock SunLogin. Each time you must enter the password to unlock SunLogin.
If you have forgotten the lock password for the SunLogin remote client, you can unlock it through passport and password. The condition is that the client is accessed to the Internet, because the unlock way using the passport and password adopts server authentication.
Note: This function is available for the versions later than SunLogin remote client 2.0.