How To Check Which Devices Are Using Your Google Account Go To Google’s Devices Dashboard – Make sure that you’re signed in to the right Google account and then head on over to Google’s Devices & ...

Your smartphone can act as your security key to authenticate your Google credentials on the web. Learn how to set that up on an Android device or an iPhone.

Google account gives you access to Google's services, but since you can sign in from multiple devices, it may jeopardize your privacy.