Send Voice OTP
Call Verification Service
Increase OTP delivery rates with our phone call verification service. With global access to our solution, you can simply integrate our API to send codes to your users.
Recent Awards and Recognition
95%
delivery rate makes it more reliable than SMS
60%
of costs are reduced by using phone call verification
75%
of respondents prefer voice OTP over SMS
What Is Call Verification?
Call verification is a security process where an automated phone call delivers a unique code to a user's registered phone number. The user listens to the code during the call and inputs it to authenticate their identity. They gain secure access while preventing unauthorized access.
Provides real-time authentication via voice call.
Prevents phishing by using voice instead of text.
How a Verification Call Works
User Requests Verification
The user enters their phone number during login, signup, or a sensitive action such as password reset.
Automated Voice Call Is Triggered
Our system instantly places an automated call to the provided phone number using our Verify API.
One-Time Code Is Read Aloud
The call delivers a unique, time-sensitive verification code via a secure voice message.
User Enters the Code
The user inputs the voice call OTP on your platform to confirm their identity.
Authentication Is Completed
Once verified, the user gains secure access—without delays, SMS failures, or phishing risks.
What Are theAdvantages of Voice OTP?
Easy and Seamless
Call verification provides a fast way for businesses to authenticate users. All it takes is implementing an automated call system that prompts users to enter the verification code.
Secure
Call verification increases security by making unauthorized access to your customers’ accounts much more challenging. The added layer ensures that only legitimate users can access their accounts.
Cost-Effective
This verification process is budget-friendly for businesses. All you have to do is integrate our Verify API with pay-as-you-go pricing—no monthly or hidden fees involved.
Trending Use Cases Call Verification
Account Login
Enhance account logins with voice code authentication. Opting for this method lets users receive a verification code by phone call, which provides a smooth and secure login process.
2F Authentication
Improve your two-factor authentication process with voice-based verification. Instead of SMS, users receive a unique code through a phone call, adding an extra layer of security to their accounts.
Transaction Authorization
Increase transaction security with voice call authorization. Users receive a verification code via a phone call, which provides additional protection for their financial transactions and minimizes fraud risks.
New Registrations
Improve new registrations with voice call verification. Users receive their code via phone call, which boosts security and simplifies the sign-up process to make it quick and user-friendly.
Password Reset
Simplify password resets with voice call verification. Users can receive a code via phone call, enhancing both the security and convenience of the password recovery process.
Easily integrate call authentication with our Verify API. Our seamless integration process guarantees quick implementation and robust protection against fraudulent activities.
Got Questions? We’ve Got Answers
What is call verification?
When should I use call verification instead of SMS?
Is voice OTP secure?
How fast is a voice OTP call delivered?
Can I use call verification globally?
How much does call verification cost?
Can I use OTP voice call verification alongside SMS?
Let's Get In Touch
Talk to our experts and see how voice can improve your user experience today!