To put it in simple terms, this is how it works:
1. Your customer clicks on the ‘Verify’ button on your app or website.
2. A unique OTP is generated in your backend system.
3. Exotel sends the same generated OTP to the customer’s registered mobile number (This can be done through SMS or voice call).
4. Your customer enters the unique OTP sent by Exotel on your app or website.
5. If the entered OTP matches with the generated OTP, the customer is marked as verified. Get our free ebook - ‘Exhaustive guide on 2-factor authentication’.

Passwords have been the primary form of customer authentication since the beginning of the internet. However, having a password-only authentication system will put businesses at an increased risk of data breaches, phishing attacks, and security threats. Therefore, most businesses use OTP services to implement two-factor authentication (2FA) into their login systems or transaction portals. With two-factor authentication enabled, your customers will need a one-time password or OTP (in addition to their registered password) to complete the transaction. To know more about 2FA, download our free ebook - ‘Exhaustive guide on 2-factor authentication’.

Any business that deals with sensitive customer information can make use of our OTP services. Some examples of the sectors that use OTP services are banking, healthcare, e-commerce, insurance, transport, etc. You can schedule a callback from our experts to understand how to implement an OTP-based authentication system for your business. 

It’s fairly simple. All you need to do is sign-up on our website and a dedicated account manager will get in touch with you to help you set-up the OTP authentication system for your business. You will also get a 15-day free trial to test our OTP services before making your buying decision. Start your 15-day free trial

The cost of our OTP services is based on your estimated monthly usage. To get effective prices and volume-based discounts, contact our sales team. 

Choosing a reliable OTP service provider in India is the key to implement a robust authentication system. Below are some of the important factors to consider:
1. Delivery and Latency Rates: Always choose a provider that can assure you of better OTP delivery rates and lower latency rates.
2. Flexible APIs: If you are implementing an OTP authentication system using APIs, then make sure that your OTP service provider’s APIs are flexible and easy to implement in your backend systems.
3. Data Security: Your customers’ data should be your number one priority. Always choose a provider that is ISO certified and exercises enterprise-grade security practices.
4. Scalability: Always choose a provider that can quickly scale up or down according to your business needs.
5. Customer Service: Choose an OTP service provider that values your time and truly cares about your success. Always ask if you are getting timely support in case you run into problems.

Exotel follows industry-leading security best practices. We power SMS communication for various banks & healthcare providers and our security practices meet all of their regulatory requirements. In fact, this is what Zivame has to say about the security of the Exotel platform: “We’ve been using Exotel for 4+ years now and haven’t experienced any security incidents/data breaches. Exotel’s platform is quite secure.”