The first time I stayed locked and I could not access my email account, having wisely enabled dual factor authentication, it was when I was in Barcelona. You could access Wi-Fi, but did not have the phone with me. My email account asking me a verification code that, for security reasons, just send me a text message or call me to the cell.
Naturally I panicked because I was in Barcelona for work issues and needed to access my email. But after a few minutes, I calmed down and I started thinking how to find around the need for a phone. I started off dual factor authentication all my accounts (not suggest you do this because the two-step authentication is extremely important for the security of your accounts).
However, I found what I was looking for how to use the dual factor authentication a cell when you do not have to hand
Sign in to your account online Wi-Fi
If you have an account with Verizon, maybe you did not know, but the operator has a universal system similar to iMessage iOS that lets you send and receive text messages from any device messaging – including your PC (even has an app for you can download desktop).
To activate this service, enter your Verizon account and open the M i plan and service menu (My plan & Services). There, choose M ride a message (Send a message).
You will see a home page for messages from Verizon. You accept the terms and conditions and click the C o continue (Continue).
Then, you will see a toolbox where you can send and receive messages. You will only see new messages (not the old that are stored on your device), and iMessages not appear. But you should not have any problem using your phone number in the United States to receive verification code text as the second factor authentication.
AT & T also has a universal messaging service called AT & T Messages that lets you receive and send text messages through messages.att.net.
You can use Google Voice
If you can not check your messages online, you need to find another route. Fortunately, there is a fairly easy – that if the account you want to enter is not your Gmail – with which you can use the dual-factor authentication with Google Voice.
Google Voice gives you a phone number US you can use to receive text messages online. Just ask the service you want to use to send you a text message to your Google Voice account, log into your Google Voice account and message text will appear in your list of received.
For obvious reasons, you should use your Google Voice number as your dual-factor authentication for any of your Google accounts because you can not enter without first Google Voice verify your identity – for Google Voice.