mVerify - Revolutionizing Phone Number Verification with OTP via OTT Channel

In today’s hyper-connected digital landscape, verifying a user's identity is no longer a luxury—it's a necessity. Whether you're onboarding new users, securing transactions, or protecting sensitive data, phone number verification plays a pivotal role in safeguarding digital ecosystems. And now, with the rise of Over-The-Top (OTT) messaging platforms, One-Time Passwords (OTPs) delivered via channels like WhatsApp, Viber, and Telegram, Zalo are redefining how businesses verify users—faster, smarter, and more cost-effectively.

What Is OTP via OTT?

OTP via OTT refers to the delivery of one-time passwords through internet-based messaging apps rather than traditional SMS. These platforms offer a secure, instant, and user-friendly way to authenticate users without relying on mobile carriers.

Key OTT Channels:

• Zalo: Most used in Vietnam
• WhatsApp: With over 2 billion users globally, it's a prime channel for instant verification.
• Viber: Popular in Eastern Europe and Southeast Asia, ideal for regional targeting.
• Telegram: Known for its privacy-first approach and global reach.

Why Businesses Are Switching to OTT-Based OTPs

1. Higher Delivery Rates

OTT platforms bypass carrier restrictions and network issues, ensuring OTPs reach users reliably—even in areas with poor cellular coverage.

2. Cost Efficiency

Sending OTPs via OTT is significantly cheaper than SMS, especially for high-volume verification needs.

3. Global Reach

OTT apps are widely adopted across demographics and geographies, making them ideal for international businesses.

4. Enhanced Security

End-to-end encryption on platforms like WhatsApp and Telegram adds an extra layer of protection against interception and fraud.

5. Better User Experience

Users are already active on these apps, so receiving an OTP feels seamless and familiar—no switching apps or waiting for SMS delays.

How It Works

• SMPP/API: Business or partner can send the OTP via SMPP just like SMS or REST API.

• Channel Detection and failover: The platform would try to send the OTP message to the end user via a failover mechanism to ensure the OTP is delivered at the optimum cost.

• Billing & reporting: Real time billing and reporting on submission, delivered, failed events.

Use Cases

• User acquisition: App install, seamless user sign up

• E-commerce: Secure checkout and account creation.

• Fintech: Two-factor authentication for transactions.

• Healthcare: Patient portal access and appointment confirmations.

• Ride-sharing & Delivery: Driver and customer identity verification.

SMS vs. OTT: A Quick Comparison

 

Feature	SMS OTP	OTT OTP
Billing transparence	Based on submission	Based on Delivery
Cost	Higher	Lower
Penetration	Very high	Limited and vary by country
Global reach	Carrier dependent	App dependent
Encryption	No	Yes

 

Final Thoughts

OTT-based OTP verification is not just a trend—it’s the future of secure, scalable, and user-friendly authentication. As businesses strive to deliver frictionless digital experiences, embracing OTT channels for phone number verification is a strategic move that combines security, efficiency, and customer satisfaction.

About Peacom mVerify.

mVerify — a service provided by Peacom — is a phone number verification and OTP delivery solution that leverages the advantages of OTT messaging channels.The smart message routing system allows low latency for the failover process on different OTT channels that allow near real time OTP delivery. The services help our partners to instantly use the services without going through the complication of registration processes.