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One Time Password (OTP) - Secure and Quick Authentication

One-time passwords or OTPs help in making the two factor authentication method even more secure because they are suitable for only one login session. They are safer than a stationary password, particularly a user-generated password, which is normally weak — it needs knowledge and carefulness to create and memorize strong passwords.

There are different methods to make a user attentive of the next OTP to make use of. The alternatives available normally come under two categories:
Hard token-based solutions involve key fobs and smart cards and Tokenless or soft token processes like mobile applications or biometrics. These soft methods make use of devices, applications, and communication channel users have by now. On-demand tokens may be regarded as a subset of soft tokens and involve solutions that send one time password through SMS or email.



When thinking about the alternatives for authentication methods, a company must address three main areas like cost, risk, and user experience. Apart from selecting one method over another, it is all about choosing the best solution for users and the kind of information that requires being protected.

Benefits of SMS for OTP

Save money
You can save huge money on the purchase of hard and soft token licenses.

Improved ROI
A client with 10,000 users could save over 150% ROI in the initial year by shifting from hard tokens to SMS API.

Enhance user experience
Take benefit of the one thing your users already bring with them all over the place they go.

Improve your safety stance
Increasing two factor authentication to 100% of your client base.

Requirements for sending OTPs by SMS

If you want to send OTPs by SMS, then:

  • You must create an account for an SMTP to SMS service that can deliver SMS to mobile phones in your country.

  • Find out the address layout for sending SMS over email. Every service provider uses a different layout.

  • Each user must have the mobile number characteristic set.

So, if you are looking for the best OTP SMS service, then using services like bulk SMS India would be a great option for you.
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