Know how to log out of your Google account on all devices

If you’re worried about someone having access to your Gmail because you forgot to log out of a shared computer or notice some unusual activity, there’s a simple fix. At the very bottom of the Gmail web app, you should see some text about “account activity” alongside a clickable link. Following that link will take you to a page where you can force a logoff on any device on which you’re currently signed into your Google account.