Two-step and even multi-step authentication will be the verification method of the future  Although it is inconvenient, the communication capabilities of the smartphone and tablet plus location or personal criteria provide more than enough variable for strong identity protection which is one of my emerging companies, is dedicated to providing safe, but complex multi-step authentication for persons and organization wanting improved security and identity protection

Thanks to Randall Stross and The new York Times
Two-Step Verification Is Inconvenient, but More Secure –