Feel like you forgot to log out of Gmail on your friend’s computer? Google makes it easy to see all the devices—laptop, phone, tablet, and otherwise—logged into your Google account. You can view both a list of IP addresses that have accessed it, and a list of devices that have actively used your account in the last 28 days.
These aren’t necessarily complete lists. Google only shows devices that have recently accessed your account, not every device that may have access. It also doesn’t show devices that have accessed your account through connected apps.
View Devices That Have Recently Accessed Your Account
Google offers a Recently Used Devices page that shows you where specific devices have accessed your account. This page is available from the Sign-in & Security account section in your Google account settings page.
You’ll see a list of recently used devices along with their locations—associated with their IP addresses—and when they were actively using your account.
Click one of the devices and you’ll see more information, including the name of the device, what browser was used on it, and the approximate location the device was used in.
Hopefully, all of these are devices you expect to see here. If you see one you don’t recognize, click the “Secure Your Account” button at the top of the page.
See IP Addresses Signed Into Gmail
Google’s Gmail has a separate account activity feature. It shows you which IP addresses have recently accessed your Gmail inbox.
To access this feature, head to Gmail on the web and click the “Details” link at the bottom right corner of the the page.
This page will tell you if you appear to be signed into your account from multiple locations at once. You’ll see which type of device it was accessed from, the IP address where the account was accessed from, and the when the access occurred.
If you see a “Show Details” link, you can click it to see more information about the device and application that accessed the account.
If you see one that looks suspicious—say, an IP address from another country or even just another state—you may want to look into it deeper. It could just be an app you’ve given Gmail access too, or it could be that someone else has access to your account.
In fact, Google will warn you about suspicious-looking access to your account. The “Show an alert for unusual activity” option here will cause Google to show you an alert if it looks like something is wrong.
If you want to ensure no one unauthorized is signed into your account and you think someone might be, you may want to change your Google account password. This will close any open sessions and prevent people that may have your current password from signing back in.