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Send Secure Voice OTP

Use automated phone calls to send Voice OTP or create a failsafe fallback for SMS OTP

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What is voice OTP service?

The voice OTP service is a sending of one time password through an automated voice call on a registered mobile number and it is generated using the text to speech generator. In most of the cases it is perfectly used as a fallback for SMS OTP failure.

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Start with call-based OTP

Businesses can facilitate the generation of call-based OTPs for their prospective customers through voice OTP 2FA. Customers can receive time-sensitive notifications instantly on their mobile like OTP, utility passwords, transactions, alerts and notifications.

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Sign up for Authkey’s Voice Call OTP

Voice call based OTP service is helping many businesses as a failsafe delivery tool for SMS OTP failure. It is cost-effective and will never let your customers wait as Authkey ensures the timely delivery of OTP calls.

Some use cases of Voice OTP solution

Fallback Solution

The failed SMS OTP can be followed by triggering an automated voice OTP with the same API.

Authentication

Using the voice OTP verification for login or signup for product, transaction, etc is a fast and secure approach.

Transactional

Protect your customer while doing a financial transaction with voice OTP authentication with a registered number.

Password Resets

Allow your customer to change the email address or password using the voice OTP verification.

Account Reactivations

Give a business back option with retrieval of suspended accounts using the number verification with Voice OTP.

Voice OTP as a Password

Replace the static password with dynamic & unique real time authentication process using call based OTP.

Advantages of using Voice OTP

Authkey is a enterprise grade OTP service provider that offer secure OTP authentication platform

Quick to reach

Phone calls are quick to reach to callee. Automated Triggering of a voice OTP reaches within a few seconds.

Simple Integrations

One API integration offers multi functionality. Perform voice OTP verification using a robust single API.

Custom Voice Template

Configure your voice OTP call Audio through dashboard. Initially play a brand signature as an impression.

Best in Market Pricing. Ready to Get Started?

Enjoy the best OTP platform. Get volume based discounts and Free Startup Credits.

Why Choose Authkey ?

We Scale with you

Regardless of one or million messages you send, our SMS infrastructure will ensure you that they deliver on time.

Pay on Delivery

Utilization based pricing enables you to get discounted pricing from the beginning while only paying for what you use.

Enterprise-grade

We connect your messaging flow directly over 220+ carriers in 200+ countries for international delivery that is best in class.

Compliance & developers

We align you with the support and developer team. We ensure that your Authkey.io experience is smooth and successful.

Frequently Asked Questions