Google 2 Step Verification Backup Codes
When you turn on 2-Step Verification, you’ll be given a set of 10 backup codes. These codes can be used to sign in if you can’t use your phone.
You can also print out your codes so you have them with you if you lose your phone.
To print your codes, sign in to your Google Account. On the My Account page, under “Sign-in & security,” click 2-Step Verification.
Under “ backup codes,” click …
