Two-factor authentication (2FA) is a an sms based solution for enhanced user authentication in applications. You have seen applications like facebook, google, viber e.t.c. use it to perform that extra layer of verification when users are accessing their application. It relies on a cell phone to receiving an additional login credential commonly referred to as a one-time password or PIN number (OTP) delivered via SMS.
2-Factor Authentication, When is it needed?
Every time a confirmation of identity is needed for your application:
- Creating a new account
- Authenticating transactions
- Access credential verification
- Activation key for new Softwares
- Sending 2nd layer information.
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