Best Hardware Wallet for Ethereum

Cryptnox Ethereum Hardware Wallet

Does the Cryptnox wallet support Ethereum?

Yes. Ethereum is pre-programmed in the Cryptnox app, so ETH can be managed without adding Ethereum through Add a Network. ERC-20 tokens on Ethereum can be added manually with Add a Token. For Ethereum accounts, private keys are created inside the secure element and are not exported from it. The free Cryptnox app on iOS and Android also gives Ethereum users WalletConnect access and works with MetaMask.

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Best Hardware Wallet for Ethereum
Cryptnox smart card with the Ethereum logo beside a phone showing a crypto portfolio on a desk

Ethereum support in the Cryptnox app

The Cryptnox Crypto Hardware Wallet – Dual-Card Set supports Ethereum as a pre-programmed network in the Cryptnox app. For a buyer choosing an ethereum hardware wallet, the important point is the setup route: Ethereum does not need to be entered as a custom EVM network before ETH can be managed.

That makes Ethereum different from EVM networks that are not already present in the app. Those networks use Add a Network. Ethereum is already available, while ERC-20 tokens are added as token entries when you want to manage them.

Ethereum route at a glance

  • ETH: managed on the pre-programmed Ethereum network in the Cryptnox app.
  • ERC-20 tokens on Ethereum: added manually with Add a Token.
  • Other EVM networks: added with Add a Network.
  • Tokens on added EVM networks: manageable after the network is added, when the token is deployed on that chain.

If you want to compare Ethereum with the other networks and assets available in Cryptnox, the coin and blockchain support overview is the best place to check the broader support map before buying.

Cryptnox black smart card with gold contact chip, NFC symbol and the Ethereum logo, on an orange-to-blue gradient

Managing ETH and ERC-20 tokens

Ethereum support in Cryptnox covers two different buyer needs: managing ETH itself and adding ERC-20 tokens that run on Ethereum. ETH uses the Ethereum network already present in the app. ERC-20 tokens are not added by creating Ethereum again; they are added through Add a Token.

This distinction matters when you are moving from a software-first Ethereum setup to a hardware wallet. The network route and token route are separate. Ethereum is already there, and token entries are added only when you need them.

What you add, and what you do not add

  • You do not add Ethereum as a custom network before managing ETH.
  • You add ERC-20 tokens manually through the app’s token function.
  • You use Add a Network for EVM networks other than Ethereum.
  • After an EVM network is added, its native coin and ERC-20 tokens deployed on that chain can be managed.

If your holdings extend beyond Ethereum, the asset-specific route can differ. For example, the Polygon hardware wallet guide covers another EVM network, while the TRON hardware wallet guide covers a separate asset page.

Ethereum keys stay inside the secure element

For Ethereum accounts created with Cryptnox, the private keys are generated within the secure element and are kept there. The phone app is used to manage the Ethereum interface, add ERC-20 tokens, and connect to Web3, but the Ethereum private keys are not created on the phone.

The Cryptnox card uses an EAL6+-certified chip. For an Ethereum buyer, that matters because the key material for ETH and ERC-20 holdings is handled in the card’s secure element rather than being exported into the app environment.

How this applies to Ethereum use

When you choose a hardware wallet for ETH, the core question is where Ethereum private keys are created and retained. With the Dual-Card Set, Ethereum key generation is handled in the secure element, and the keys remain there after setup. The Cryptnox app provides the iOS and Android interface for managing Ethereum assets.

This design also keeps ERC-20 token management tied to the same Ethereum key model. Adding a token through Add a Token changes what you manage in the app; it does not move the private keys out of the secure element.

Dual-card backup for Ethereum holdings

The product for this page is the Cryptnox Crypto Hardware Wallet – Dual-Card Set. The set ships uninitialised, so the Ethereum wallet is created during setup rather than before delivery.

During initialisation, the seed is generated inside both secure elements. That is why the second card is the backup for ETH and ERC-20 holdings managed through the same setup. A new Cryptnox setup does not require writing down a recovery phrase as the default backup method.

Why the second card matters for Ethereum

Ethereum users often manage ETH and several ERC-20 tokens from the same wallet environment. With the Dual-Card Set, the backup is created at the same time as the primary card, so the backup model is part of the initial Ethereum setup rather than a separate paper step.

If you already have a BIP39 recovery phrase, importing a 12- or 24-word BIP39 recovery phrase is available as an advanced option. For a new Ethereum setup with Cryptnox, the standard route is the two-card creation process, where both secure elements are involved from the beginning.

Before transferring ETH or adding ERC-20 tokens, use the Cryptnox startup guide so the two-card setup is completed in the right order.

Smart card access for Ethereum

The Cryptnox Ethereum wallet uses a contact and NFC smart card form factor. You can tap the card to a phone or insert it into a reader. This dual-interface design gives Ethereum users two supported ways to present the card during wallet use.

The free Cryptnox app is available on iOS and Android. When unlocking an Ethereum workflow in the app, the phone’s fingerprint or face unlock can be used through the Cryptnox app, and the card itself does not contain a biometric sensor.

Phone app and card roles

  • The app is where Ethereum is already available as a network.
  • The app is where ERC-20 tokens are added through Add a Token.
  • The card is where Ethereum private keys are generated and retained inside the secure element.
  • The second card is the backup created during initialisation.

The cards are Swiss-engineered and made in Switzerland. For an Ethereum buyer, the practical form-factor decision is simple: Cryptnox is a contact and NFC smart card that works with the app, rather than a device that requires a different physical workflow.

Best Hardware Wallet for Ethereum

Ethereum Web3 access with WalletConnect and MetaMask

Ethereum buyers often want hardware key storage without giving up familiar Web3 routes. The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask, so Ethereum sessions can use those interfaces while the ETH private keys stay in the card’s secure element.

WalletConnect is the connection route from the Cryptnox app to Web3. MetaMask support is also available, which matters for Ethereum users who already use MetaMask as part of their workflow. Cryptnox keeps the hardware card as the place where Ethereum private keys are created and retained.

How this fits ETH and ERC-20 use

For ETH, the Ethereum network is already in the app. For ERC-20 tokens, Add a Token is the manual step. For Web3, WalletConnect and MetaMask provide the access route. Those three points define the Ethereum experience: pre-programmed Ethereum network, manual ERC-20 token addition, and Web3 access from the Cryptnox app.

If you compare Ethereum with non-EVM holdings, the Bitcoin hardware wallet guide covers a different asset page. If you also evaluate another chain route, the Ronin hardware wallet guide provides a separate comparison point.

Ethereum holders who swap or bridge through an aggregator can follow the DeFi and bridge aggregator guide, which connects the card to Bungee Exchange over WalletConnect step by step.

Choosing Cryptnox for Ethereum

For an Ethereum buyer, Cryptnox answers the main purchase questions directly. Ethereum is already programmed in the app. ERC-20 tokens can be added manually. Ethereum private keys are generated in the secure element and are not exported from it. The second card is created as the backup during setup.

The best crypto hardware wallet collection places Cryptnox in the wider hardware wallet range, but the Ethereum page has a specific reason to exist: ETH is available without adding the Ethereum network manually, and ERC-20 token management is handled through the token-addition route.

Buy the Ethereum-ready Dual-Card Set

Choose the Dual-Card Set if you want the Ethereum network ready in the Cryptnox app, ERC-20 token addition when needed, a contact and NFC smart card form factor, and a backup card generated as part of the initial wallet setup.

To order the product described here, use the official Cryptnox Crypto Hardware Wallet – Dual-Card Set product page.

Frequently asked questions

Is Ethereum pre-programmed in the Cryptnox app?

Yes. Ethereum is already present as a network in the Cryptnox app, so ETH does not require manual network creation through Add a Network. That route is different from other EVM networks, which can be added manually when needed.

How do I add ERC-20 tokens on Ethereum?

ERC-20 tokens on Ethereum are added manually with Add a Token in the Cryptnox app. Ethereum itself is already available as the network, so adding an ERC-20 token is a token-management step rather than an Ethereum network setup step.

Can Cryptnox add other EVM networks besides Ethereum?

Yes. Any EVM network can be added through Add a Network. Once that EVM network is added, its native coin and any ERC-20 token deployed on that chain can be managed. Ethereum is handled separately because it is pre-programmed.

Where are Ethereum private keys created with Cryptnox?

For Ethereum wallets created with Cryptnox, private key generation takes place inside the secure element, and the private keys are not exported from it. The app manages the Ethereum interface, ERC-20 token entries, WalletConnect, and MetaMask access.

Does Cryptnox ship worldwide, and will I pay import duties?

Yes. Cryptnox ships worldwide from the official CRYPTNOX store. Orders to Switzerland, the European Union and the United States are dispatched from stock already held in each of those regions, so the parcel does not cross a customs border into your country and there are no import duties to pay. Orders to other destinations are shipped internationally, and any import duties or local taxes are set by the destination country and are the recipient’s responsibility. Current shipping rates are shown at checkout.

How does the second card protect ETH and ERC-20 holdings?

The Dual-Card Set arrives uninitialised. During setup, the seed is created inside both secure elements, so the second card becomes the backup for the same Ethereum wallet. A new setup uses that two-card model instead of asking for a written recovery phrase by default.

Does the Cryptnox card have its own fingerprint or face sensor?

No. Unlocking uses the phone’s fingerprint or face unlock through the Cryptnox app. The card itself has no biometric sensor. For Ethereum use, the card remains the secure element-based key store while the phone and app provide the management interface.

Can I use MetaMask with Cryptnox for Ethereum?

Yes. The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. Ethereum users can keep that Web3 route while ETH private keys are generated and kept inside the card’s secure element.

Is the Cryptnox wallet an HD wallet with a new receive address for each transaction?

No, and on this network that is not a limitation. The Cryptnox wallet uses one address per chain. HD address rotation comes from Bitcoin’s UTXO model and the BIP32/BIP44/BIP49/BIP84 derivation scheme; on account-model networks each account is a single fixed address by design, so the question does not apply in the same way. Cryptnox’s single-address-per-chain behaviour matches how these networks work.

At the cryptography layer the card derives keys along BIP32 and SLIP-10 paths, one path per supported chain, though that is not exposed in the app as multi-address management.