Draft:Digital Shield

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Digital Shield

Digital Shield is a hardware cryptocurrency wallet developed by Yuheng Network Technology Limited, a company based in Hong Kong. The wallet was launched in 2025 and is designed to provide self-custody solutions for digital assets. It supports both online (hot) and offline (cold) storage modes and features open-source hardware and software components.

Background

The development team includes professionals with experience in cybersecurity, hardware design, and blockchain infrastructure. Team members have previously worked on security architecture for financial institutions, including Morgan Stanley, and consulted on chip security at Samsung Electronics. Some were involved in auditing code for the Ethereum ecosystem and contributed to drafting central bank digital currency (CBDC) security standards in Asia.

Technical Features

Digital Shield employs certified hardware and secure cryptographic elements:

Secure Element: Uses a CC EAL6+ certified chip for private key storage and cryptographic operations.
Open-Source Architecture: Both hardware and firmware are open-source, allowing public code audits.
Air-Gapped Mode: Offers offline transaction signing via QR codes to reduce the risk of online attack vectors.
Multi-Wallet Compatibility: Compatible with widely-used wallets that support standard Web3 protocols (e.g., MetaMask, TokenPocket).
Token Support: Supports over 3,000 cryptocurrencies, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), and Solana (SOL).
Communication Modes: Includes Bluetooth, NFC, and QR-based data transfer.

Device Specifications

The hardware wallet, marketed as Digital Shield Pro, includes the following components:

Dual-core Cortex-M4/M7 processor, up to 480 MHz
CC EAL6+ secure chip
Bluetooth 5 support (Nordic BLE chip)
3.1-inch touchscreen (480×800 resolution)
Camera supporting 30 FPS scanning
620mAh lithium battery (approx. 2.5 hours of active use)

Usage Scenarios

Digital Shield is designed for users who prioritize self-custody of cryptocurrency assets. It allows switching between Bluetooth-based operation for convenience and air-gapped signing for security. The device also provides features for managing non-fungible tokens (NFTs), including visual display and wallet switching.

Philosophy

According to the developer, the wallet is intended as part of a broader infrastructure for self-managed asset security in decentralized systems. The product emphasizes user control over private keys.

References