Sessions

Sessions lists every device currently logged into your account: its IP address, whether it's the device you're using right now (the This Device? column), its user agent, and when it was last active.

Revoking a Session

Right-click a session (or open the menu at the end of its row) and select Remove to log it out; on your current session the action is disabled. This is useful if you spot a session you don't recognize or want to sign out an old device.

To clear everything at once, Log Out Others in the top right ends every session except the one you're using. It asks for confirmation first, and reports how many were removed. This is what you want after losing a device or changing your password.

Changing your password from Account does not end other sessions by itself - it offers you this same action in a prompt afterwards. Completing a password reset is different: it always revokes every session on the account, with nothing to confirm.