Two-step verification makes sure that even if a hacker guesses your password, then your account will still be safe. Every time you log in from a new device, you will get a code or notification from Google that you will have to enter or approve in order for the sign in to be successful.

"This phone number cannot be used for verification" If you find this error message, you have to use a different number. To protect you from abuse, we limit the number of accounts each phone number can create. You can use a family member or friend's phone number instead.

The "Activity on this account" page shows your sign-in records, and includes the information below. In the "Concurrent session information" section, you'll see if you're signed in to Gmail on another device, browser, or location.

If you take or upload a photo of your ID, your ID will be securely stored, won't be made public, and will be deleted after your date of birth is successfully verified. If you use a credit card, any temporary authorization will be fully refunded.