You can log out of OriginsNext at any time from the account menu. Logging out ends your session, so anyone using the same browser cannot reach your account without signing in again.
Log out from the account menu
To log out of OriginsNext:
Click your profile name (the account menu) in the top-right corner of the screen.
Select Log out.
You are signed out and returned to the OriginsNext login page. After you log out, navigating back to an OriginsNext page does not grant access until you log in again.