The Browser Sessions section in Settings shows every device currently signed in to your account, and lets you sign them all out at once.
Reviewing your sessions
Each session shows the device and browser, the approximate location, and when it was last active. Your current session is marked.
It's worth glancing at this occasionally. If you see a device or location you don't recognize, treat it seriously — change your password, sign out other sessions, and turn on two-factor authentication.
Signing out other devices
Go to Settings → Browser Sessions.
Click Log Out Other Browser Sessions.
Enter your password to confirm.
Every session except your current one ends immediately. Those devices will need to sign in again.
When to use this
You signed in on a shared or public computer and didn't sign out.
You've lost a phone or laptop.
You suspect someone else has your password.
You want a clean slate after changing your password.
Signing out of your current device
Use the Log Out button at the bottom of Settings. No password confirmation is needed. If you have two-factor authentication on, you'll complete the challenge again next time you sign in.
Common problems
Your password is rejected — this section needs your current account password, even if you normally sign in with Google. If you don't have one, use the forgot password flow to set one.
Sessions you signed out come back — someone is signing back in, which means they have your password. Change it immediately and enable two-factor authentication.
This doesn't affect your brokerage
Signing out sessions here has no effect on your brokerage connections or your running systems. To revoke brokerage access, see Disconnecting a brokerage account.