Star Protocol payment system by Ari Kahn

Please Call Me inventor has new billion-dollar service for mobile networks that could change online transactions forever. Ari Kahn, the South African-born inventor behind MTN’s Call Me service, has unveiled Star Protocol, a groundbreaking technology designed to add payment rails, user authentication, and verification features directly to cellular networks.

Unlike most payment systems that require apps or bank accounts, Star Protocol works with simple star codes (*). Users initiate a payment by dialing a number starting with a star symbol from their phone. The cost is deducted from their prepaid balance or added to their postpaid account — no apps, no wallets, and no extra steps.

What Makes Star Protocol Different?

The innovation behind Star Protocol is its simplicity. A user browsing a website could click a button that launches their phone dialer with a pre-filled star code. By tapping “call,” the subscriber authorizes the payment. The network does the rest — whether completing a micropayment, confirming identity, or verifying age.

Kahn calls this instant process the “Wink”, describing it as a millisecond signal that can revolutionize mobile transactions. His first commercial application, Starpay service, focuses on frictionless micropayments, a challenge that has plagued internet commerce for decades.

“It transforms five billion micro-sized SIM cards into micro credit cards,” says Kahn.

This means even unbanked individuals can participate in digital payments, using their cellular accounts as virtual wallets.

From Call Me to Star Protocol: Ari Kahn’s Journey

Ari Kahn inventor of the original Call Me feature is no stranger to disruptive ideas. His journey toward Star Protocol began over 20 years ago when he developed MTN’s USSD-based Call Me service in November 2000.

While Vodacom’s legal battle with Nkosana Kenneth Makate over “Please Call Me” gained media attention, Kahn’s patent and implementation were on record first. MTN launched its service in January 2001, weeks before Vodacom introduced its version.

Today, Kahn’s new project aims to deliver a billion-dollar opportunity for mobile networks by unlocking additional revenue streams without infrastructure overhauls.

Why Star Protocol Could Be a Game-Changer

Existing payment systems rely on apps, wallets, and financial intermediaries, which create friction and fees. With Star Protocol, the network becomes the fintech provider. No banks, no apps, no compliance nightmares for merchants.

Advantages for Networks and Users:

• Zero additional infrastructure cost for operators

• Instant transactions using existing SIM cards

• Micropayments made possible for services like news, music, and gaming

• Inclusive financial system for the unbanked

The potential is enormous: billions of SIM cards could function like micro credit cards, enabling microtransactions at scale.

Star Protocol’s Billion-Dollar Applications

Kahn envisions multiple use cases for Star Protocol beyond Starpay service:

1. Starpay – Micropayments Solution

Allows users to pay for digital content, premium features, and online services with a single star code dial — removing barriers that block micropayments today.

2. Star Verify – Anti-Bot and Identity Authentication

Uses zero-knowledge proofs to verify identity without exposing sensitive information, creating a stronger alternative to Captcha.

3. Star Gate – Age Verification

Ensures compliance with age-restricted content regulations without requiring users to upload government IDs.

With countries like the UK and Australia enforcing strict age-verification laws, this solution could save companies compliance costs and protect user privacy.

How It Works Technically

Kahn leveraged a simple principle: every cellular network has routing exceptions. By redirecting invalid routes (numbers starting with a star) into productive operations, operators unlock new services.

Kahn demonstrated Star Protocol using a minimal setup — a $5 AWS Lightsail server and a $1.50 Twilio SIP trunk — handling 5,000 transactions per second at just 15–20% CPU usage. Scaled up, this system could manage 100,000+ transactions per second for $100 per month.

Why the Mobile Industry Needs This Now

As micropayments remain an unsolved challenge, networks are searching for new revenue streams without heavy investment. Star Protocol offers exactly that — with near-zero implementation cost.

Moreover, as privacy regulations and digital payment challenges grow, a network-level solution like Starpay service provides both compliance and convenience.

Ari Kahn’s Billion-Dollar Vision

Kahn argues that Star Protocol represents “a billion-dollar new revenue stream at zero additional cost.” If widely adopted, it could become the backbone for digital transactions in emerging markets, especially where banking access is limited.

For users, this means seamless, secure payments without apps, cards, or bank accounts. For networks, it means new profits from existing infrastructure.

Here are five reputable South African mainstream media sources that have covered Ari Kahn and the Star Protocol innovation, each with a link to the relevant article:

1. MyBroadband – “Please Call Me inventor has new billion‑dollar service for mobile networks”
   MyBroadband+9MyBroadband+9X (formerly Twitter)+9
   Link: https://mybroadband.co.za/news/cellular/605336-please-call-me-inventor-has-new-billion-dollar-service-for-mobile-networks.html

2. MyBroadband – “The real inventor of Please Call Me in South Africa”
   Daily Maverick+3MyBroadband+3MyBroadband+3
   Link: https://mybroadband.co.za/news/cellular/560641-the-real-inventor-of-please-call-me-in-south-africa.html

3. TechCentral – “Interview: Ari Kahn speaks out on the ‘please call me’ saga”
   MyBroadbandTechCentral
   Link: https://techcentral.co.za/interview-ari-kahn-speaks-out-on-the-please-call-me-saga/178226/

4. Daily Maverick – “Critical question: where is Makate’s Please Call Me patent?” (provides context on inventorship and Kahn’s contribution)
   LinkedIn+9Daily Maverick+9TechCentral+9
   Link: https://www.dailymaverick.co.za/article/2024-02-19-key-questions-remain-but-more-critically-where-is-nkosana-makates-please-call-me-patent/

5. Stuff (South Africa) – “Though the Vodacom Please Call Me saga is unresolved, at least inventor Ari Kahn has finally been acknowledged”
   Daily MaverickMyBroadband+2Stuff South Africa+2TechCentral+2
   Link: https://stuff.co.za/though-the-vodacom-please-call-me-saga-is-unresolved-at-least-inventor-ari-kahn-has-finally-been-acknowledged