Secure Crypto Starts with your SIM

The global gateway to crypto for the next 3 billion mobile-first users by turning SIM cards into secure, portable crypto vaults.

Our mission is to make crypto access safer and simpler by turning SIM cards into secure wallets. ZingVault helps users store, send, and manage digital assets with hardware-backed security, built for mobile-first adoption.

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Introduction

Overview

ZingVault transforms SIM and eSIM cards into secure crypto wallets, enabling users to send, receive, and manage digital assets without internet access or smartphones. It bridges telco infrastructure and Web3, providing frictionless, offline access to decentralized finance for the billions still underserved by traditional crypto tools.

Problem

Billions of mobile users lack access to crypto due to smartphone, internet, or seed phrase limitations. Traditional wallets are not built for feature phones or low-connectivity environments. There is a global demand for a simple, secure, and accessible wallet solution that works on any mobile device.

Solution

ZingVault is a SIM-native, offline-capable crypto wallet system:

  • Java Card applet installed on SIM/eSIM
  • Key generation and transaction signing on-SIM
  • Works via USSD, STK, or companion mobile app
  • Compatible with Ethereum, Solana, BNB Chain, and more
  • Telco-integrated KYC and identity layer

Why Now

Rapid growth of crypto in emerging markets

Rising demand for DeFi + stablecoin access without internet

Telcos are actively seeking fintech partners

eSIM adoption enables instant, global distribution

Traction & Roadmap

MVP completed with on-SIM key signing and testnet support

Pilots under discussion with telcos in Africa and Southeast Asia

Targeting 5M users by Year 3 via telco/NGO rollout

SDK launching for Web3 wallet integration in Q2 2025

Business Model

B2B SDK/API Licensing to wallets, exchanges, NGOs, and telcos

White-label SIM wallet infrastructure deals

Transaction fees on crypto swaps and stablecoin transfers

SIM-based Identity-as-a-Service (KYC/DID)

Premium subscriptions via mobile app

Product Summary

What is ZingVault

ZingVault is a secure and lightweight crypto wallet system embedded directly into SIM and eSIM cards. It enables users to generate, store, and sign blockchain transactions using the SIM’s hardware secure element. It is designed to work across both feature phones (via USSD/STK/SMS) and smartphones (via a companion mobile app), offering a fully mobile-first and offline-capable crypto experience.

How It Works

Key Generation & Storage

  • The Java Card applet installed on the SIM generates a cryptographic key pair (public/private keys).
  • The private key remains within the SIM’s secure environment and cannot be extracted.
  • The public key is used to derive the user’s wallet address on supported blockchains.






Transaction Signing (Offline/Online)

  • Users interact with the wallet using:
    • STK/USSD menus on feature phones
    • SMS commands via telco gateways
    • Mobile app UI on Android/iOS smartphones
  • A user initiates a transaction (send/receive crypto).
  • The applet signs the transaction securely within the SIM using the private key.
  • The signed transaction is sent to a blockchain relayer over the telco backend or mobile app.

Blockchain Integration

  • The backend relayer infrastructure supports Ethereum, BNB Chain, Polygon, and Solana.
  • Relayers validate and broadcast signed transactions to the blockchain.
  • SIM-integrated identities can also be used to issue verifiable credentials or support decentralized ID frameworks.






App & Developer Integration

  • The companion app provides enhanced UX, token balances, QR scan features, and staking.
  • A developer SDK allows third-party wallets, DeFi apps, and exchanges to:
    • Authenticate users via SIM
    • Enable SIM-based signing
    • Add SIM-authenticated wallet functionality

Security Benefits

  • SIM/eSIM chips are secure elements widely tested and used in telco-grade infrastructure.
  • Private keys are never exposed to the mobile OS or external interfaces.
  • Authentication occurs silently over GSM signaling or encrypted mobile app APIs.



Advantages Over Traditional Wallets

  • No seed phrase or password required
  • No smartphone or internet dependency
  • Telco-grade cryptographic security
  • Scalable to 5B+ SIM-enabled devices





Core Features

  • On-SIM key generation and cryptographic signing
  • No internet required (via USSD/SMS)
  • SIM/eSIM secure hardware layer
  • Telco KYC integration for user identity
  • Mobile app interface for enhanced UX
  • Blockchain relayer backend for transaction processing

Product Summary

Market Opportunities


Massive potential across crypto & non-crypto identity markets

1. Crypto Wallet Market

  • TAM: $8.4B by 2030 (CAGR: 24%)
  • Current Users: ~450M globally
  • Pain Point: Seed phrase complexity, poor UX on mobile
  • Opportunity: Bring crypto to mobile-first users via SIM/eSIM

2. Mobile Identity & Authentication Market

  • TAM: $67B+ by 2032 (Source: Juniper, GSMA, etc.)
  • Use Cases: Fintech login, banking KYC, DeFi, telco ID-as-a-service
  • Drivers:
    • SIM/eSIM becoming a trusted identity layer
    • Rising demand for passwordless authentication
    • Regulatory pressure for strong KYC (especially in emerging markets)

3. Convergence Market (SIMVault Sweet Spot)

  • Targetable market: 1B+ mobile-first users across emerging markets
  • Crypto on-ramp/off-ramp via telcos
  • Wallets with built-in SIMAuth SDK
  • Non-crypto apps needing secure mobile login (e.g., fintech, eGov, healthtech)

4. eSIM adoption is growing rapidly

  • 4.6B+ eSIM-capable devices expected by 2028
  • Telcos transitioning to eSIM gives SIMVault a future-proof edge
  • offer stronger security and remote provisioning for identity management

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