Description
What if I login my user ID on my friend's device and forget to logout? Then my friend will access my user ID without my permission because there is no way to logout his device from my device and my friend's device will not be logout until press the logout button.
Make a button (place it in suitable place like profile/under the logout button in header): This button logout user id from other device that he/she login. This button will be visible when keep alive session it true. Otherwise hidden.
Note: Also other device logout (when keep alive session is true) option will be automatically applied when user change there password if user want (make a toggle for other device logout under the password input field, if user checked then applied otherwise skip ).