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GLOV SSS: Mnemonic Shards

Hardware seed phrase security with Shamir Secret Sharing

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What is GLOV SSS?

GLOV SSS (Mnemonic Shards) is an innovative open-source hardware solution that revolutionizes the protection of your BIP-39 seed phrases using the mathematically proven Shamir Secret Sharing algorithm.

Your seed phrase is split into multiple encrypted fragments (shards) that individually reveal no information. Only when reuniting a predefined threshold can the original seed be reconstructed—providing unmatched resilience against loss or theft.

🚀 Coming Soon 📴 100% Offline 🔐 Non-Custodial

🔑 Core Features

  • Shamir Secret Sharing (SSS)
  • Flexible threshold (e.g., 3 of 5)
  • Dedicated ESP32-S3 hardware
  • Complete offline operation
  • Secure memory clearing
  • BIP-39 compatible

Core Principles: Your Security, Our Priority

Security First

Robust cryptography, hardened TLS configuration, and minimized attack surface throughout the entire stack.

Offline-First

Zero external dependencies, no cloud calls, no CDN. The device operates in complete autonomy.

Non-Custodial

You remain the sole guardian of your secret. GLOV SSS is a tool, not an intermediary.

Zero Cloud Dependency

Complete absence of external services, tracking, or third-party APIs. Your data stays yours.

Understandable & Educational

Designed to be reviewed and understood, fostering trust and knowledge.

Absolute Rule: No sensitive data (seed, shards, keys) ever leaves your local environment.

How It Works

1
Input Seed Phrase

Enter your BIP-39 seed phrase (12, 18, or 24 words) on the secure offline device.

2
Configure Threshold

Define splitting parameters (e.g., 3-of-5: need 3 shards to reconstruct from 5 total).

3
Generate Shards

GLOV SSS splits the seed into encrypted fragments using Shamir's algorithm.

4
Store Securely

Distribute shards across different secure locations (safes, trusted contacts, etc.).

Reconstruction Process

When you need to recover your seed phrase, simply reunite the minimum threshold of shards (e.g., any 3 out of 5). The device reconstructs your original seed phrase only in volatile memory for immediate use—never stored permanently.

Dedicated Hardware Platform

ESP32-S3 Hardware
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ESP32-S3

Processor
  • Dual-core Xtensa LX7
  • 240MHz CPU frequency
  • PSRAM enabled (8MB)
Display & Interface
  • 1.9" TFT color screen
  • Two physical buttons
  • System monitor on screen
Security Features
  • Secure memory clearing
  • Cold boot attack protection
  • Factory reset capability
Network
  • Local WiFi AP (HTTPS only)
  • TLS 1.2+ enforced
  • No internet connectivity

Advanced Security Architecture

  Memory Protection
  • • Secure memory clearing (secureClearMemory())
  • • Cold boot attack countermeasures
  • • Minimal RAM exposure time
  • • Adaptive watchdog system
  Network Security
  • • HTTPS-only local access
  • • Strict HTTP security headers
  • • CSP, HSTS, X-Frame-Options
  • • Rate limiting protection
  Observability
  • • Real-time system monitor on TFT
  • • Unified logging system
  • • Memory & storage metrics
  • • CPU temperature monitoring
  Cryptographic Standards
  • • Shamir Secret Sharing (SSS)
  • • BIP-39 compliant wordlists
  • • Secure random number generation
  • • No key material persisted

Who is GLOV SSS For?

Crypto Holders

Secure your Bitcoin, Ethereum, and other crypto wallet seed phrases with military-grade protection.

Businesses

Manage corporate crypto treasury with distributed custody and compliance-ready audit trails.

Security Professionals

Implement best-practice key management for clients or internal security operations.

Privacy Advocates

Secure PGP keys, encrypted vaults, or any BIP-39 compatible sensitive credentials.

Frequently Asked Questions

GLOV SSS combines mathematically proven Shamir Secret Sharing with dedicated offline hardware. Unlike paper backups (single point of failure) or encrypted digital storage (vulnerable to hacking), GLOV SSS distributes the risk across multiple fragments while maintaining complete offline operation. Plus, it's open-source and auditable by the community.

No advanced technical skills required. GLOV SSS features an intuitive interface with clear on-screen instructions. The device guides you through the splitting and reconstruction process step-by-step. However, basic understanding of seed phrases and crypto security principles is recommended.

This is the beauty of Shamir Secret Sharing. If you configure a 3-of-5 scheme, you can lose up to 2 shards and still reconstruct your seed phrase with the remaining 3. This provides resilience against loss while maintaining security (an attacker would need at least 3 shards to compromise your seed).

GLOV SSS works with any BIP-39 compliant seed phrase (12 or 24 words). This covers the vast majority of modern crypto wallets including Ledger, Trezor, MetaMask, Trust Wallet, and many others. The device splits and reconstructs the seed phrase itself—it doesn't interact with specific wallet software.

Absolutely! Once GLOV SSS launches, the complete source code will be available on GitHub under an open-source license. We encourage security researchers, developers, and the community to audit the code, report findings, and suggest improvements. Transparency is a core principle.

We're currently in the final stages of development and testing. To be notified as soon as GLOV SSS is available, please contact us and mention your interest in the product. You'll be among the first to know about launch details, pricing, and pre-order availability.
Launching Soon

Secure Your Digital Sovereignty

GLOV SSS will be available for purchase soon. Be among the first to experience military-grade seed phrase protection with our innovative hardware solution.

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Have questions? Contact our team