 In some countries, such as the United States, the United Kingdom and India, Google may also require one-time use of a mobile phone number to send an account validation code by SMS text messaging or voice message when creating a new account.Google also offers a 2-step verification option—for additional security against hacking—that requests a validation code each time the user logs into their Google account.The code is either generated by an application ("Google Authenticator" or other similar apps) or received from Google as an SMS text message, a voice message, or an email to another account.