NGRAVE ZERO In-Depth Analysis: Why Is It the Ultimate Choice for a Secure Hardware Wallet?

NGRAVE ZERO is a completely air-gapped hardware wallet that permanently stores private keys in an offline environment, fundamentally eliminating the possibility of hacking through network intrusion. It is currently the only blockchain financial product to receive EAL7 security certification, which represents the highest known level of security assurance.

As of January 2026, the market price of this wallet is approximately $275 (or equivalent in euros), positioning it in the high-end hardware wallet market.

Air-Gapped Isolation: Redefining Security Boundaries

The core innovation of NGRAVE ZERO lies in its “zero connection” design philosophy. Unlike other hardware wallets on the market that require interaction with external devices via USB, Bluetooth, or NFC, ZERO has no physical or wireless data interfaces. All data exchanges are conducted entirely through QR code scanning. When a user needs to sign a transaction, the accompanying mobile app generates a QR code, which the wallet scans using its built-in camera to retrieve transaction information. After signing, the wallet generates another QR code, which is scanned by the phone and broadcasted to the blockchain network. The private key never leaves the device during this process.

This extreme isolation creates a true “air-gapped” environment, making remote attacks impossible because attackers have no digital pathway to access the private key.

EAL7 Certification: The Everest in Security

To understand the security status of NGRAVE ZERO, it is essential to understand the EAL (Evaluation Assurance Level) certification system. This is an internationally recognized standard for IT security evaluation, with seven levels, where EAL7 is the highest. According to the University of Maryland’s global campus, EAL7 requires “formal design and testing verification,” meaning every security component and process must undergo the strictest, most mathematically rigorous validation.

In the blockchain industry, mainstream hardware wallets like Ledger Nano X are certified at EAL5+, while products like Trezor have not obtained EAL certification. NGRAVE ZERO is currently the only blockchain financial product worldwide to achieve EAL7 certification. This certification not only surpasses all competitors but also exceeds the standards of many security devices used in traditional banking systems.

Dual Defense: Physical and Digital

In addition to air-gapped isolation and top-tier certification, NGRAVE ZERO also excels in physical security. Its all-metal integrated casing offers excellent durability and incorporates tamper-evident mechanisms.

If someone attempts to forcibly open the device, the wallet will immediately detect physical intrusion and automatically erase all stored private key information, ensuring asset security. This mechanism is a direct response to known attack methods in the hardware wallet field—previously, hackers have physically opened other brands of hardware wallets and used technical means to extract data from chips.

Outstanding Ecosystem: More Than Just a Wallet

NGRAVE offers a complete digital asset security ecosystem, not just a single hardware device.

The GRAPHENE stainless steel backup plate is an important part of this system. It is not an ordinary paper mnemonic backup but consists of two stainless steel plates. Users engrave their mnemonic on the central card and then seal it. This design resists fire, water, and even corrosion, ensuring that the recovery phrase remains intact even under extreme conditions. It addresses the common issues of traditional paper backups being fragile and easily lost.

The LIQUID mobile app acts as a bridge between the offline world and the online blockchain. It allows users to view balances and market data in real-time while ensuring private keys are never exposed to online environments.

2025-2026 Hardware Wallet Market Comparison

How to Choose Your Digital Asset Safe

When faced with numerous hardware wallet options, Gate users need to make informed decisions based on their needs. First, consider your asset size and security priorities. If you hold high-value digital assets and plan to hold long-term, the extreme security offered by NGRAVE ZERO may be a worthwhile investment. For users who need frequent transactions and interaction with multiple decentralized applications (DApps), wallets with Bluetooth support and more DeFi integrations like Ledger might be more practical, though this may slightly reduce security.

For beginners entering the cryptocurrency space with smaller assets, more affordable hardware wallets like Tangem or KeepKey can be good starting points.

Gate User Recommendations and Market Outlook

After storing assets with a hardware wallet, you can still use platforms like Gate for daily trading and asset exchange. This strategy combines the security of cold storage with the convenience of hot wallets. A typical workflow is: store your long-term core assets in NGRAVE ZERO, while keeping a small amount in your Gate account to seize trading opportunities. This “cold-hot separation” approach is adopted by many experienced investors.

Looking ahead, the hardware wallet market will continue to grow. Industry analysis predicts that by 2031, the global hardware wallet market size will reach $3.6 billion. As the value of digital assets increases and self-custody awareness grows, demand for high-security solutions like NGRAVE ZERO will continue to rise.

The hardware wallet market is evolving rapidly, with new products constantly emerging. Recently, at the end of 2025, the Solana ecosystem announced a dedicated hardware wallet solution priced at $42 for entry-level users. The emergence of new products offers users more choices, but regardless of price point, the core mission remains the same: to ensure private key security and enable users to truly control their digital wealth. Between price and security, there is always a delicate balance. As the NGRAVE team坚持的理念：帮助人们“守护自己的财富，以便他们能自由地过上想要的生活”。