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Twilio Cookbook Second Edition by Roger Stringer

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Adding two-factor voice authentication to verify users

Being able to verify that the users are actual users, and being able to help them have better security, is an important factor for everyone, and that's where two-factor authentication comes in handy.

Two-factor authentication is a more secure way of logging in to a website. In addition to entering a password online, a user has to enter a random verification code generated at login time. This combination of passwords makes it easier to safeguard your applications.

Two-factor authentication is used in:

  • E-commerce sites
  • Sites that allow users to sign up
  • Recovering lost passwords (by sending the new code to a phone number already saved)

More and more big web services are starting to activate two-factor ...

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