What is Two Factor Authentication (2FA)? Two Step Verification SMS
Two Factor Authentication is basically an additional layer of security for online transactions. Many of us wouldn’t even know about Two Factor Authentication or Two step verification, though we everyday come across such incidents.
In this era of Internet fraud and digital crime, Two Factor Authentication actually reduces the risk of Internet theft and email phishing.
In addition to your existing username and password, an extra layer of security added for completing online important transactions.
Two Factor Authentication (2FA) / Two Step Verification
If you are into online banking, you would probably know about 2 factor authentication or two step verification as they send out tokens via SMS and ask you to authenticate before completing important online transactions.
Before you complete an important transaction, banks or your web service provider generates a token for between 10 to 30 minutes and ask the user to validate using One Time Password (OTP) SMS on your registered mobile number.
Once you validate that token, the transaction would be safely completed and save you from losing your identity and other important information.
Nowadays many websites has implemented Two Factor Authentication in their application such as:
Email providers such as Gmail, Yahoo.
Online shopping like Amazon, eBay .
All banks and financial institutions.
Social media sites like Facebook, Twitter.
Airline Companies like Jetairways, Air India.
Flight Ticketing agencies like MakeMyTrip, ClearTrip.
And lot more.
Don’t get paranoid when you see such type of services from any of your service providers as this is for one and only YOU and your safety. Or even you could demand such services if some provider not using such services and get saved.
Hope this article helped you understand about Two Factor Authentication or Two Step Verification using SMS services.
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If we have missed something please let us know in your comments.
2 Comments
Shantanu
Do you have any sample code for OTP SMS?
admin
Yes, you can find it at How to Send OTP SMS in PHP