Log out all devices
a button that you can LOG OUT of all devices ( e.g.computers and phones)
If a computer have been compromised of a mobile device lost or stolen.
For peace of mind so you know all entry to your e-mail has been blocked.
Within the Settings tab, please visit the Security tab and select “Log out all other sessions.”
Wouldn't changing your password accomplish the same goal? I've changed my password before and other devices have to then enter the correct new password.
Plus 2fa I don't see this as necessary
This would or should go with two factor authentication. After a device has been authenticated, then there should always be an option to remove devices