Silent Authentication API (TS.43, NV2) ? Network-Based Authentication

THE ACCESS GAP

Network Authentication
API. From 2G to 5G.

Silent network authentication, built on the mobile operator infrastructure itself. TS.43 EAP-AKA. USSD fallback. 104+ operators. Zero user friction.

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104

Operator networks

2G to 5G

Network coverage

<300ms

Auth latency

User actions required

16+ yrs

Operator trust

AUTHENTICATION PRODUCTS

Two Products. Every Authentication Use Case.

SilentAuth+ for invisible primary authentication. P2A for acknowledgement-based secondary flows. Both built on carrier-grade infrastructure.

NETWORK-BASED

SilentAuth+

The silent network authentication API is built on GSMA TS.43 entitlement framework, leveraging EAP-AKA SIM-based authentication. It authenticates users via SIM cryptographic credentials, invisibly, in milliseconds, on any network from 2G to 5G, with a unique USSD fallback for markets where data does not reach.

TS.43 EAP-AKA

Number Verify 2

2G to 5G + Wi-Fi

USSD Fallback

SIM Swap Detection

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API Docs

USER-INITIATED

P2A Authentication

Person-to-Application authentication for flows requiring explicit user acknowledgement, or for operator networks without TS.43 support. Same 104+ operator infrastructure as SilentAuth+.

High-value transaction confirmation

Regulatory-mandated explicit consent

Networks without TS.43 support

Hybrid SilentAuth+ plus P2A flows

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API Docs

INDUSTRIES WE SERVE

Authentication Built on The Network, Not on Messages

The fundamental flaw of SMS OTP is using a communication channel as a security mechanism. Carrier-grade authentication removes that dependency entirely.

SIM cryptography, not messages

SilentAuth+ uses the cryptographic credentials baked into the SIM card. The same infrastructure operators use to authenticate devices onto networks. There is nothing to intercept because there is no message sent.

Network, not application

Authentication happens at the mobile operator network layer, coordinated by u2opia Entitlement Server. No app required. No internet dependency. No smartphone needed. Just a SIM card and a signa

16+ years of direct operator trust

Carrier-grade auth only works through direct operator connections. u2opia 15 years of MNO relationships and Entitlement Server deployments across 104+ networks is the infrastructure behind every authentication.

SMS OTP ALTERNATIVE

SMS OTP is not an Authentication Standard. It Was a Convenience.

SMS OTP became the default because it was easy to implement, not because it was secure. Today it is exploited by SS7 attacks, SIM swap fraud, and Artificial Inflation Traffic (AIT) that costs enterprises millions in fraudulent message charges.

Regulatory bans are now active across APAC and MENA. Malaysia, Hong Kong and Singapore have restricted SMS OTP for financial services. SilentAuth+ replaces it entirely

Why Replace SMS OTP

GLOBAL COVERAGE

Carrier-grade Authentication Where it Matters Most

Direct operator connections across four regions. 2G through 5G with USSD fallback. Where competitors have gaps, u2opia has depth.

Sub-Saharan Africa

Kenya, Nigeria, South Africa, Ghana, Tanzania and beyond. 2G/3G USSD fallback for rural markets. Key advantage over IPification and Shush.

Kenya

Nigeria

South Africa

+12 More

Southeast Asia

Indonesia, Thailand, Philippines, Malaysia, Vietnam. Mixed 2G/3G/4G/5G environments. High prepaid penetration.

Indonesia

Thailand

Philippines

+12 More

Middle East and North Africa

Saudi Arabia, UAE, Egypt, Jordan, Kuwait. High 4G/5G penetration. Strong financial services adoption.

Saudi Arabia

UAE

Egypt

+12 More

South Asia

ndia, Pakistan, Bangladesh, Sri Lanka. Massive mobile bases with significant 2G/3G legacy networks requiring USSD fallback.

India

Pakistan

Bangladesh

+12 More

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COMPETITIVE ANALYSIS

How SilentAuth+ Compares to IPification and Shush

Both IPification and Shush are silent authentication providers, but their technical approach and geographic reach differ significantly from SilentAuth+.

IPification relies on IP-address matching, which requires mobile data and does not work on Wi-Fi or 2G/3G. Shush is designed for mature 4G/5G markets. Neither covers the full 2G-to-5G and Wi-Fi range with USSD fallback that SilentAuth+ delivers.

	SilentAuth+	IPification	Shush
Authentication method	TS.43 EAP-AKA (SIM-based) ✓	IP address matching	Network-based
Works on Wi-Fi	Yes SIM credentials ✓	No — Mobile data only	Limited
2G / 3G support	Yes USSD fallback ✓	Partial — LTE+ required	Partial — Aggregator model
GSMA TS.43 standard	Native ✓	No — Proprietary	No
CAMARA NV2 compliant	Yes ✓	No	Partial
Emerging market depth	Africa, SEA, MENA, South Asia ✓	Limited	Primarily developed markets
USSD fallback	Yes Unique advantage ✓	No	No
SIM swap detection	Yes ✓	Limited	Partial

Authentication method

✓
TS.43 EAP-AKA (SIM-based)

IP address matching

Network-based

Works on Wi-Fi

✓
Yes SIM credentials

No — Mobile data only

Limited

2G / 3G support

✓
Yes USSD fallback

Partial — LTE+ required

Partial — Aggregator model

GSMA TS.43 standard

✓
Native

No — Proprietary

CAMARA NV2 compliant

✓
Yes

Partial

Emerging market depth

✓
Africa, SEA, MENA, South Asia

Limited

Primarily developed markets

USSD fallback

✓
Yes Unique advantage

SIM swap detection

✓
Yes

Limited

Partial

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FREQUENTLY ASKED QUESTIONS

Mobile Authentication API Questions, Answered

Expand All Collapse All

How can telcos monetise authentication APIs?

Telcos can monetise authentication by exposing network-based identity APIs to enterprises, generating revenue from user verification instead of relying on declining SMS OTP traffic. This creates a new high-margin API revenue stream.

What is TS.43 authentication and why does it matter for operators?

TS.43 is a GSMA standard that enables SIM-based authentication using EAP-AKA across mobile and Wi-Fi networks. It allows operators to act as trusted identity providers instead of relying on third-party authentication methods.

How does silent authentication help telcos reclaim authentication from OTT players?

Silent authentication shifts identity verification from apps and SMS OTP back into the mobile network. This allows telcos to control authentication flows and capture value from every login and transaction.

What is Number Verify 2 (NV2) and how is it used by telcos?

Number Verify 2 is a GSMA Open Gateway API that confirms a phone number matches the active SIM card. Telcos can offer NV2 as a standardised API for real-time identity verification.

How does network-based authentication compare to SMS OTP?

Network-based authentication is faster, more secure, and does not require user input. Unlike SMS OTP, it is resistant to SIM swap fraud, phishing, and delivery failures.

Can telco authentication work across 2G, 3G, 4G, and 5G networks?

Yes, network-based authentication can work across all generations of mobile networks using a combination of TS.43, USSD fallback, and operator integrations.

How does authentication API revenue compare to SMS OTP revenue?

Authentication APIs provide scalable, usage-based revenue with higher margins, while SMS OTP revenues are declining due to fraud, regulation, and user friction.

What role do telcos play in digital identity and GSMA Open Gateway?

Telcos are positioned to become global identity providers through GSMA Open Gateway APIs like Number Verify. They can offer secure, interoperable identity services to enterprises worldwide.

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