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Keystone

  • What it is:Keystone is a 100% air-gapped QR code hardware wallet for secure storage of Bitcoin, Ethereum, and 1000+ cryptocurrencies, featuring open-source firmware and Secure Element protection.
  • Best for:High-value crypto holders, Multi-chain DeFi/NFT users, Privacy-focused Bitcoiners
  • Pricing:Starting from $149 - $169
  • Rating:85/100Very Good
  • Expert's conclusion:Keystone 3 Pro is ideal for security conscious crypto investors and organizations who are willing to pay premium prices for Hardware designed specifically to provide Isolation, Transparency, and Advanced Tamper Protection.
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Reviewed byMaxim Manylov·Web3 Engineer & Serial Founder

What Is Keystone and What Does It Do?

Keystone, Inc., formerly known as Cobo Vault, was founded in 2017 by CEO Lixin Liu and CTO Aaron Chen and has been an industry leader in providing hardware-based crypto wallets that offer military grade security and blockchain interoperability to individuals and businesses around the world. Keystone's focus is on developing Open Source Hardware Wallets (OSHW) designed to protect users' private keys and secure their cryptocurrency holdings.

Active
📍Beijing, China
📅Founded 2017
🏢Private
TARGET SEGMENTS
Crypto IndividualsEnterprisesBitcoin UsersMulti-Chain Users

What Are Keystone's Key Business Metrics?

📊
200+
Supported Chains
📊
5,500+
Supported Coins/Tokens
📊
15+ (e.g., MetaMask, BlueWallet)
Compatible Wallets
Regulated By
MIL-STD-810G(USA (military standard))EAL 5+ Secure Element(International)Web3 Foundation Grant(Global)

How Credible and Trustworthy Is Keystone?

85/100
Excellent

The firm has provided several security related products and services; has developed several security-related products and services and provides a high level of transparency regarding the development of its security-related products and services through open source methods; has provided a number of innovative security-related products and services using military grade hardware; however, publicly available information concerning the size and scope of the customer base of Keystone is limited.

BREAKDOWN
Product Maturity90/100
Company Stability80/100
Security & Compliance95/100
User Reviews75/100
Transparency90/100
Support Quality80/100
TRUST SIGNALS
Open-source firmwareEAL 5+ Secure ElementMIL-STD-810G compliantOfficial MetaMask partnerWeb3 Foundation grant recipient

What is the history of Keystone and its key milestones?

2017

Company Founded

Keystone was originally established as Cobo Vault in Beijing, China with a primary product line consisting of hardware-based crypto wallets.

2018

First Product Launch

In addition to other fundraising efforts, Cobo Vault successfully raised funds for its Cobo Vault Ultimate on Indiegogo which was the first premium hardware based crypto wallet to meet MIL-STD-810G standards.

2020

Web3 Grant

Keystone received a Web3 Foundation grant to further develop and integrate the Polkadot.js API into its products.

2023

Rebrand to Keystone

The company has undergone significant changes and has been operating as Keystone under the direction of CEO Lixin Liu and CTO Aaron Chen.

What Are the Key Features of Keystone?

✨
100% Air-Gapped QR Code Signing
Keystone devices are capable of performing completely offline transactions using QR codes, thereby enabling use of third party software wallets such as MetaMask and BlueWallet.
✨
4-Inch Touch Screen
Keystone uses a large touchscreen display for ease of navigation and verification without requiring small buttons that can be difficult to verify visually.
✨
Fingerprint Authentication
Keystone also offers biometric fingerprint scanning for rapid and secure access to the device.
✨
EAL 5+ Secure Element
Keystone employs bank-grade secure chips to ensure that private keys remain within the device at all times.
✨
Open-Source Firmware
Keystone publishes publicly accessible firmware audit reports and has made its Secure Element firmware available for public review.
💬
Multi-Chain Support
Keystone currently supports over 200 different blockchains and 5,500+ different coins/tokens including Bitcoin, Ethereum, and NFTs.
✨
Blind Signing Prevention
Keystone allows users to visually verify their transactions prior to signing them with the device, therefore eliminating blind signature vulnerabilities associated with certain blockchain technologies such as Ethereum.
📊
Advanced Recovery Options
Keystone includes support for SLIP-39 Shamir shares, dice roll seed generation, and automatic calculation of the 24th word required for the creation of a BIP39 wallet.

What Technology Stack and Infrastructure Does Keystone Use?

Infrastructure

Air-gapped hardware with no USB/Bluetooth connectivity

Technologies

QR Code TransmissionEAL 5+ Secure ElementOpen-Source FirmwareBIP39SLIP-39

Integrations

MetaMaskBlueWalletSpecterSparrowNunchukPolkadot.js

AI/ML Capabilities

No AI/ML features; focuses on cryptographic hardware security

Based on official blog, Bitcoin Wiki, and reviews; tech details from product descriptions

What Are the Best Use Cases for Keystone?

Bitcoin Maximalists
Keystone has released a firmware version that exclusively supports Bitcoin transactions, as well as firmware versions that include multi-signature functionality and Air-Gapped QR Code Signing capabilities to provide the highest levels of security for users who plan to "HODL" their cryptocurrencies for extended periods of time.
Multi-Chain DeFi Users
Keystone now supports the vast majority of existing blockchains (over 200), as well as supporting more than 5,500+ different coins/tokens, with MetaMask integration to enable secure interaction with decentralized finance ("DeFi") platforms without risk of encountering blind signature vulnerabilities.
NFT Collectors
Keystone is capable of supporting the management of over 1,000+ different cryptocurrencies, including non-fungible tokens ("NFTs"), with users able to view visual transaction verification displays on the large screen of the device to assist users in safely managing their cryptocurrency portfolios.
NOT FORHigh-Volume Traders
QR Code Signing can be slower when performing a high volume of transactions compared to other options such as USB or Bluetooth connections.
NOT FORBeginners New to Crypto
There are advanced features available in this wallet, such as Shamir Backup which will require you have a certain level of technical knowledge to use them properly. A "seed only" type of wallet might be a good option for beginners.

How Much Does Keystone Cost and What Plans Are Available?

Pricing information with service tiers, costs, and details
☐Service$CostℹDetails🔗Source
Keystone 3 Pro$149 - $169Hardware wallet with touch screen, air-gapped security, multi-coin support99Bitcoins review, The Bitcoin Hole
Keystone Tablet$49Metal seed phrase backup plate, fire resistant, corrosion resistant99Bitcoins review
Bundle (Wallet + Tablet)$254.80Discounted bundle price vs separate purchase ($277.80)Official website
Keystone 3 Pro$149 - $169
Hardware wallet with touch screen, air-gapped security, multi-coin support
99Bitcoins review, The Bitcoin Hole
Keystone Tablet$49
Metal seed phrase backup plate, fire resistant, corrosion resistant
99Bitcoins review
Bundle (Wallet + Tablet)$254.80
Discounted bundle price vs separate purchase ($277.80)
Official website

How Does Keystone Compare to Competitors?

FeatureKeystone 3 ProTrezor Model TLedger Nano X
Touch Screen InterfaceYes (4-inch)YesNo (buttons)
Air-Gapped OperationYes (100%)No (USB)No (Bluetooth/USB)
Supported Coins5500+ (BTC, ETH, SOL, etc.)1000+5500+
Secure Element Chips3x PCI1x1x
Seed Backup OptionsBIP-39, SLIP-39, TabletBIP-39BIP-39
Starting Price$149-$169$169$149
Open Source FirmwareYes (FOSS)YesPartial
Fingerprint UnlockYesNoNo
BTC-Only FirmwareYesYes (Trezor One)No
Privacy Features (Tor, Coin Control)YesPartialPartial
Touch Screen Interface
Keystone 3 ProYes (4-inch)
Trezor Model TYes
Ledger Nano XNo (buttons)
Air-Gapped Operation
Keystone 3 ProYes (100%)
Trezor Model TNo (USB)
Ledger Nano XNo (Bluetooth/USB)
Supported Coins
Keystone 3 Pro5500+ (BTC, ETH, SOL, etc.)
Trezor Model T1000+
Ledger Nano X5500+
Secure Element Chips
Keystone 3 Pro3x PCI
Trezor Model T1x
Ledger Nano X1x
Seed Backup Options
Keystone 3 ProBIP-39, SLIP-39, Tablet
Trezor Model TBIP-39
Ledger Nano XBIP-39
Starting Price
Keystone 3 Pro$149-$169
Trezor Model T$169
Ledger Nano X$149
Open Source Firmware
Keystone 3 ProYes (FOSS)
Trezor Model TYes
Ledger Nano XPartial
Fingerprint Unlock
Keystone 3 ProYes
Trezor Model TNo
Ledger Nano XNo
BTC-Only Firmware
Keystone 3 ProYes
Trezor Model TYes (Trezor One)
Ledger Nano XNo
Privacy Features (Tor, Coin Control)
Keystone 3 ProYes
Trezor Model TPartial
Ledger Nano XPartial

How Does Keystone Compare to Competitors?

vs Trezor Model T

Although both products offer similar pricing and have a similar touch screen interface, Keystone has a much higher level of security than Trezor. Keystone has its security based on an air-gapped connection using QR Codes and also contains 3 times the amount of secure element technology that Trezor has. Keystone is able to support more cryptocurrencies and also has features that Trezor does not, including fingerprint unlock.

If you want to maximize your security isolation then you should consider purchasing a Keystone. However, if you prefer to work with an established company you may prefer to purchase a Trezor.

vs Ledger Nano X

Although both products offer a very comparable price point and cryptocurrency support, Keystone does not rely on Bluetooth or USB connections to function, whereas Ledger does. Ledger also has a wider range of applications for mobile devices but has far less transparent documentation regarding their open source software.

If you value maximum security and isolation then you should consider purchasing a Keystone. However, if you prioritize convenience over security then you may prefer to purchase a Ledger.

vs Tangem Wallet

Although Tangem offers a low priced product that utilizes a card style NFC design it does not offer a touch screen. Keystone is able to provide a more user-friendly interface along with many more advanced security features including Shamir Backup.

If you are looking for a rich feature set and experience then you should consider purchasing a Keystone. However, if you are looking for a simple, minimalistic solution to back up your coins then you may prefer to purchase a Tangem.

What are the strengths and limitations of Keystone?

Pros

  • Keystone utilizes a 100 percent air-gapped design and allows you to perform all operations (signing) off-line via QR Code eliminating the need for a USB or Bluetooth connection.
  • The 4-inch large touchscreen on Keystone is designed to mimic the user experience of a smart phone providing a more tactile experience for the user.
  • Keystone includes triple PCI secure elements that include dual protection from both supply chain and physical attacks.
  • Keystone utilizes an open source firmware that allows for reproducible builds with verifiable security.
  • Keystone provides multi-backup options that include BIP-39 and SLIP-39 Shamir Shares and durable metal tablets.
  • Keystone includes advanced privacy features that include coin control, Tor support and custom fees (RBF/CPFP).
  • Keystone utilizes fingerprint authentication to add an additional layer of convenience.

Cons

  • Keystone is priced higher ($149-$169) and although it is competitive with well-established brands, Keystone does not currently have a mobile application companion app.
  • Entering the 24-word seed backup on the device can be time consuming.
  • Keystone does not include a wall charger, you will need to purchase a separate USB-C adapter.
  • The microSD card is not included with Keystone, although it may be required to download some firmware updates and/or access some of Keystone's features.
  • The younger brand reputation of Keystone 3 Pro means that it has a lesser-established track record in comparison to Ledger/Trezor
  • Only battery-powered; does not have a permanent power option. Keystone 3 Pro can be powered via AAA batteries or via USB

Who Is Keystone Best For?

Best For

  • High-value crypto holders — Air-Gap Security with Triple Secure Elements; best suited for those with multiple portfolios
  • Multi-chain DeFi/NFT users — 5500+ coins supported, including ETH, SOL, Polygon; meets the diversity of many Web3 use cases
  • Privacy-focused Bitcoiners — Firmware option for exclusive BTC usage, coin control, Tor integration; offers maximum anonymity
  • Tech-savvy users preferring touch interface — Offers smartphone-like user experience; outperforms physical buttons in terms of navigation
  • Security researchers/developers — Keystone 3 Pro’s firmware is fully open-source and supports customization and build for specific verification processes

Not Suitable For

  • Budget-conscious beginners — Premium Pricing; best-suited for users who are familiar with hardware wallets and should consider either a Trezor One or an Electrum Software Wallet
  • Mobile-first traders — Does not include a mobile companion app for quick access to funds. Ledger or Trust Wallet may be more suitable for users needing to access their funds on-the-go.
  • Users wanting plug-and-play simplicity — Keystone 3 Pro has a learning curve associated with using QR Code workflow. Users may find other options such as Ellipal or SafePal more straightforward when utilizing USB-less alternatives.

Are There Usage Limits or Geographic Restrictions for Keystone?

Supported Cryptocurrencies
5500+ coins/tokens including BTC, ETH, BNB, SOL, XRP
Seed Phrase Length
12/18/24 words BIP-39, SLIP-39 Shamir shares
Firmware Updates
Via MicroSD card or USB-C, secure boot verification required
Power Source
Rechargeable battery or AAA batteries via pack
Connectivity
100% air-gapped, QR code signing only - no USB/Bluetooth/NFC
PIN Protection
Alphanumeric PIN with decoy wallet and brick countdown
Geographic Availability
Global shipping with verified secure sourcing
Compliance Certifications
PCI anti-tamper chips, secure element certified

Is Keystone Secure and Compliant?

100% Air-GappedComplete offline operation using QR code signing - no USB, Bluetooth or NFC connectivity risks
Triple PCI Secure ElementsThree independent secure chips protect against physical, supply chain and side-channel attacks
Open Source FirmwareFully reproducible FOSS builds with secure boot verification prevent malicious code execution
Supply Chain ProtectionTamper-evident packaging and firmware ships uninstalled for user verification
Shamir Backup (SLIP-39)Multi-share secret sharing eliminates single point of failure for seed recovery
Advanced AuthenticationFingerprint unlock, alphanumeric PIN, duress/decoy wallets, countdown-to-brick
Privacy ProtectionsCoin control, Tor integration, custom nodes, deterministic nonces (RFC6979)
Fee ProtectionsEnforces user-defined maximum fee percentage to prevent excessive transaction costs

What Customer Support Options Does Keystone Offer?

Channels
Availablekeyst.one
Support Limitations
•Limited public information about support channels, response times, and availability hours
•No live chat, phone support, or dedicated support tiers documented

What APIs and Integrations Does Keystone Support?

Integration Type
Hardware wallet compatible with 30+ software wallets including MetaMask, BlueWallet, OKX, Bitstamp, Solflare, and others
Connectivity
Air-gapped via QR codes and microSD card for offline data transfer. No Bluetooth, WiFi, or NFC
Multi-Signature Support
Supports BIP-129 standard for Bitcoin multi-signature wallets
Asset Support
5,500+ coins and tokens from 200+ blockchains including Bitcoin, Ethereum, Litecoin, Dogecoin, Solana, Cardano, and ERC-20 tokens
Platform Compatibility
Windows, Linux, Mac, Android, Chrome OS, iOS

What Are Common Questions About Keystone?

Keystone 3 Pro utilizes three separate secure-element chips (Microchip ATECC608, Maxim DS28S60Q, and Maxim MAX32520) to store the seed phrase and biometric data independently. Keystone 3 Pro includes PCI-level anti-tampering mechanisms and will automatically delete all stored data if the user attempts to physically tamper with the device. Additionally, Keystone 3 Pro is 100% air-gapped and users are limited to transferring data via QR code and/or microSD cards.

Keystone 3 Pro supports over 5,500 cryptocurrencies and tokens from more than 200 different blockchains, including major cryptocurrencies such as Bitcoin, Ethereum, Litecoin, Cardano, Solana, Dogecoin, and ERC-20 tokens.

Keystone 3 Pro is compatible with 30+ software wallets, including MetaMask, BlueWallet, OKX, Bitstamp, Solflare, and many others. Keystone 3 Pro also has full compatibility with both MetaMask extensions and apps allowing users to access DApps on EVM chains.

Keystone 3 Pro is 100% air-gapped and communicates transactions through QR codes scanned by the device’s built-in camera and/or microSD card transfers. This provides a completely offline method of communicating transactions without requiring Bluetooth, WiFi, or NFC.

Keystone 3 Pro is the only hardware wallet with three secure element chips and PCI-level anti-tampering features. Keystone 3 Pro has a 4-inch LCD touch screen display (480 x 800 resolution), fingerprint authentication which takes only 0.5 seconds to verify, and can hold three different seed phrases at once.

Yes, Keystone 3 Pro is 100% open source and includes verifiable firmware, enabling the community to audit the code itself. Keystone 3 Pro's firmware is written in Rust for added security.

Keystone 3 Pro is 62.44 × 103.9 × 12.08 mm in size and weighs 103 grams. Keystone 3 Pro includes a 1000mAh rechargeable lithium ion battery (3.7Wh), USB-C port, Micro SD card slot, fingerprint sensor, and QR code camera.

Yes, Keystone 3 Pro has advanced recovery options, and can store several seed phrases at once (max of three). In addition, Keystone 3 Pro has a self-destruct feature that will wipe all data should someone attempt to physically tamper with the device.

Is Keystone Worth It?

Keystone 3 Pro is a high-end hardware wallet that provides users with an unprecedented level of protection due to its use of three secure element chips, and PCI-level anti-tampering protections. With 100% air-gapped architecture, open source and auditable codebase, along with support for over 5500 cryptocurrencies, Keystone 3 Pro is among the safest and most versatile hardware wallets currently available. Additionally, the four inch touchscreen interface and wide range of software wallets compatible with Keystone 3 Pro make it ideal for serious crypto investors.

Recommended For

  • Serious crypto investors who manage large portfolios with many different digital currencies.
  • Bitcoin and Ethereum investors looking to maximize their security.
  • Users that value openness, verifiability, and auditability.
  • Individuals that are concerned with physical security and physical tampering attacks.
  • Advanced users that are familiar with multi-signature and multi-wallet configurations.
  • Those looking for an air-gapped, or completely offline solution for signing transactions.

!
Use With Caution

  • Users looking for an integrated software wallet; Keystone does not have an integrated wallet, and instead uses third party integrations.
  • Those looking for 24/7 customer service; there appears to be limited support channels for Keystone.
  • Users with large amounts of Altcoins – although Keystone can hold more than 5500 assets, we recommend verifying your token(s) individually prior to storing.
  • Teams without experience working with technology -- In order to properly set up the wallet, and to take advantage of the advanced features, you will need some knowledge of how to work with a blockchain.

Not Recommended For

  • Casual Investors on a budget -- our Premium Pricing reflects Enterprise Grade Security
  • Users who want a built-in software wallet – this requires you to utilize a compatible third party software wallet.
  • Users looking for Bluetooth or Mobile App Direct Connection -- Due to an Air-Gapped Design, it is impossible to connect directly to the Internet through Bluetooth or a mobile app.
  • Customers looking at Customer Support as their Primary Differentiation -- There is limited information available regarding Customer Support for Keystone.
Expert's Conclusion

Keystone 3 Pro is ideal for security conscious crypto investors and organizations who are willing to pay premium prices for Hardware designed specifically to provide Isolation, Transparency, and Advanced Tamper Protection.

Best For
Serious crypto investors who manage large portfolios with many different digital currencies.Bitcoin and Ethereum investors looking to maximize their security.Users that value openness, verifiability, and auditability.

What do expert reviews and research say about Keystone?

Key Findings

Keystone 3 Pro is a premium Hardware Wallet that uses innovative Hardware Design to deliver superior security performance. The Hardware includes Three (3) Separate Secure Element Chips, PCI-Level Anti-Tampering Mechanisms, and is 100% Air Gapped utilizing QR Codes and Micro SD Cards. Keystone 3 Pro is capable of supporting 5,500+ Cryptocurrencies from 200+ Blockchains with Full Open Source Code for Verifiable Auditability and is Compatible with 30+ Software Wallets. The Hardware also contains a 4" Touch Screen Display, Fingerprint Authentication, and Multiple Recovery Mechanisms Including Multi-Signature Recovery Via BIP-129 Standard.

Data Quality

Good — comprehensive technical specifications from official product pages and detailed reviews. Security features verified across multiple sources. Cryptocurrency support and software wallet compatibility well-documented. Limited public information about customer support channels, pricing, and customer satisfaction metrics.

Risk Factors

!
No Officially Documented Customer Support Channels or Response Times Available
!
Premium Pricing May Limit Adoption by Casual Users
!
Dependence upon Third Party Software Wallets rather than Integrated Solution
!
Limited Information Available Regarding Real World Security Audits and/or Penetration Testing Results by Third Parties
Last updated: January 2026

What Additional Information Is Available for Keystone?

Multi-Signature Capability

Keystone 3 Pro Supports Multi-Signature Wallets Following the BIP-129 Standard that was Co-Authorized by the Development Team. This Enables Multiple Approver(s) for Transactions and Enhanced Security for Institutional/Group Holdings.

Device Security Features

In addition to being able to verify a user’s fingerprint in under 0.5 seconds, Keystone 3 has an integrated camera that enables users to scan QR codes using the wallet's camera in a safe manner. Additionally, Keystone 3 uses Rust programming language for its firmware which has significantly improved memory safety and greatly decreased the chance of an exploit.

Multi-Firmware Options

Keystone 3 is offered with two types of firmware; Standard Multi-Coin Firmware and Bitcoin-Only Firmware. Using Bitcoin-Only Firmware will reduce the attack surface since it limits the amount of code written for Bitcoin and would be ideal for maximalists.

Seed Phrase Management

The device is capable of storing up to 3 unique seed phrases safely, thus making it functionally equivalent to having 3 completely separate cold wallets in 1 hardware device. Each seed phrase is stored independently from each other due to the use of individualized security isolations.

MetaMask Integration

Keystone 3 Pro is the only hardware wallet fully compatible with MetaMask extensions and mobile applications and provides users with access to all DApps and all of their features on EVM compatible blockchain networks while at the same time keeping the user’s transactions signed in an air-gapped environment.

Community Auditing

The wallet’s 100% open-sourced code allows the community to view and audit the code, thus allowing them to see how the security mechanisms work and to independently verify all of the claims made about the data protection and key management of the wallet.

What Are the Best Alternatives to Keystone?

  • •
    Ledger Nano S Plus: Keystone 3 Pro is a top of the line industry leading hardware wallet that uses a secure enclave and supports a large number of cryptocurrencies. It is an older more established brand than the Ledger.com company but they are using proprietary firmware whereas Keystone 3 Pro is using open source firmware. Keystone 3 Pro is less expensive than Ledger.com devices but they have the same level of security and are good for users who want a high quality hardware wallet that is supported and do not need open source firmware. (Ledger.com)
  • •
    Trezor Model T: Keystone 3 Pro is a top of the line, open sourced, hardware wallet that uses a touchscreen interface and has superior software integration capabilities. They utilize the same level of security as Ledger.com but have a slightly different design on their hardware. Keystone 3 Pro is priced similarly to Ledger.com products but currently support fewer cryptocurrencies (1,000+ versus 5,500+) than Ledger.com does. Keystone 3 Pro is best suited for users that require a high-quality hardware wallet with an open sourced reputation and community support. (Trezor.io)
  • •
    ColdCard: Premium Bitcoin-focused hardware wallet which provides a secure and private way to store your Bitcoins, as well as offering an offline configuration option (not requiring use of a computer) that is especially beneficial to the "Bitcoin maximalist". While it has limited support for other altcoins, it offers many specialized security options, making this wallet best suited for serious Bitcoin investors who do not have a need to hold altcoins. (coldcardwallet.com)
  • •
    Cypherock X1: The Cypherock Wallet uses a unique method of key fragmentation, where the user's seed is distributed across multiple physical cards, providing additional security options in addition to the use of a secure element. It does offer some support for altcoins; however, its use will be primarily focused by those users seeking different security architectures from their hardware wallets. (cypherock.com)
  • •
    SafePal S1: This is a budget-friendly hardware wallet that supports over 10,000 coins and includes a touchscreen interface. It is significantly less expensive than the Keystone 3 Pro, and while it does provide some level of security, it lacks the advanced security features found in the higher end hardware wallets. Due to its lower cost, the Safepal wallet will likely appeal to cost-conscious users who want a simple way to protect their coins with the minimal amount of features offered by a hardware wallet. (safepal.io)

What Is Keystone's Hardware Security Status?

Secure ElementBank-grade proprietary Secure Element chip with TRNG
Open Source FirmwareBIP32, BIP39, BIP44 compliant open-source firmware
Air-Gap Option100% air-gapped QR code transmission, eliminates malware infiltration
Tamper-Proof DesignSelf-destructive mechanism and hardware-level protection
Open Source HardwareCircuit diagrams, schematics, and bill of materials published
PIN ProtectionPIN protection with secure authentication

What Asset Types Does Keystone Support?

Multiple chains including Ethereum, Bitcoin, and others
Blockchain Coverage
Full NFT management capabilities
NFT Support
MetaMask Mobile integration for DeFi assets
DeFi Integration
Growing list with recent additions
Coin Support

What Connectivity Options Does Keystone Support?

Qr Airgap
Primary method - QR code based air-gapped signing with camera scanning
Usb Connection
USB-C option available for flexibility
Companion App
MetaMask Mobile integration (first hardware wallet with native mobile integration)
Bluetooth
Not supported - maintains air-gap security
Nfc
Not supported
Camera
Rear-facing camera for QR code scanning

What Is Keystone's Device Specifications?

Display
High-resolution color IPS display with ultra-durable cover glass (Batch 2)
Input Method
Touchscreen and fingerprint reader (Keystone 3 Pro)
Battery
1200 mAh Lithium Ion, removable and replaceable, supports USB-C charging (power-only)
Dimensions
103.9mm x 62.5mm x 12.9mm
Weight
103g
Materials
Durable cover glass bonded to display

How Does Keystone Handle Backup and Recovery?

Multi-Seed Support

Keystone 3 Pro Supports 3 Seed Phrases

24-Word Seed Phrase

BIP-39 Standard Recovery Phrase

Seed Sheet Backup

6 Seed Sheets Included With Device

Hardware Recovery

Allows Restore On Same Or New Device

Bitcoin-Only Recovery

Offers Optional Bitcoin Only Firmware Mode

What Is Keystone's Transaction Signing Status?

On-Device Verification4-inch touchscreen enables transparent transaction review
Clear SigningSolved blind-signing problem with transparent display
Web AuthenticationWeb-based transaction authentication
QR Code SigningAir-gapped QR-based transaction signing
Multi-Signature SupportCompatible with multisig setups
Fingerprint AuthenticationBiometric transaction approval (Keystone 3 Pro)

How Does Keystone's Product Lineup Compare?

ModelKey FeaturesDisplaySecurity FocusTarget User
Keystone 3 ProFingerprint reader, 3 seeds, Bitcoin-only option, USB + air-gapHigh-resolution color IPSPremium security with biometricsPower users with significant crypto holdings
Keystone StandardAir-gap QR code, MetaMask integration, open-sourceTouchscreenAir-gap focusedUsers prioritizing air-gap security
Passport (Competitor ref)USA assembled, air-gapped, replaceable battery, USB power-onlyHigh-resolution color IPSAirgapped isolationPremium security-focused users

All models feature open-source firmware, QR code air-gap capability, and MetaMask integration

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