There’s a new Devices and Activity dashboard that gives you additional information about the devices that have recently accessed your Google account.
The page shows a summary view of all devices that have been active on your account within the last 28 days, including all those currently signed in.
Should you spot anything suspicious, there’s also a setting to immediately begin the process to secure your account and change the password.
First, click on your avatar at the top right and select Account:
Open up the Security tab and you’ll see the display of recent devices:
Of course, this is a good place to go should one your mobile devices be lost or stolen; but it’s also worth the occasional check to make sure you haven’t left some forgotten-about device logged into your account.