Yes. The Cryptnox Crypto Hardware Wallet – Dual-Card Set can hold ether.fi ETHFI as an ERC-20 token on Ethereum after you add ETHFI once with Add a Token or Add a Network in the Cryptnox app. ETHFI is not pre-programmed on the cards. Use the Ethereum chain, the 0x-prefixed 20-byte EVM address format, and the ETHFI contract address 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb.
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Ether.fi ETHFI is holdable with the Cryptnox Crypto Hardware Wallet – Dual-Card Set as an ERC-20 token on Ethereum. The cards do not arrive with ETHFI already displayed, so the first ETHFI setup step is to add the token details once in the Cryptnox app.
The ETHFI receiving address uses the Ethereum address model: a 0x-prefixed 20-byte EVM address. The ETHFI ERC-20 contract address is 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb. The same contract is shown on Etherscan’s ETHFI token page, which is useful when checking that the token you add is the Ethereum ERC-20 ETHFI token.
The Cryptnox coin and blockchain support page helps you check how Ethereum token support fits with the other assets you may want to hold on the same Dual-Card Set.
The Dual-Card Set ships uninitialised, so ETHFI setup starts after the card set is initialised in the Cryptnox app on iOS or Android. ETHFI is not pre-programmed on the cards. Add it once through Add a Token or Add a Network, depending on the app flow you are using for Ethereum tokens.
For ETHFI, the important point is that the asset is an ERC-20 token on Ethereum, not a separate ETHFI chain. If the app asks for a token contract, use 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb on Ethereum. If the app asks for a network first, use Ethereum before adding the ETHFI token details.
The official ether.fi ETHFI documentation identifies ETHFI as the token associated with ether.fi. For card setup, the ETHFI detail you use in the wallet flow is the Ethereum ERC-20 contract address.
ETHFI is held through an Ethereum address, and that address is controlled by private keys. With the Cryptnox Dual-Card Set, private keys are generated inside the secure element and never leave it. The card uses an EAL6+-certified chip, and that chip property is part of the key-generation and key-storage model.
Because ETHFI is an ERC-20 token, the same Ethereum address format matters throughout setup and receiving: a 0x-prefixed 20-byte EVM address. The token entry in the app identifies ETHFI by contract address, while the private keys controlling the Ethereum address remain inside the secure element.
The card protects the private keys that control the Ethereum address used for ETHFI. The ETHFI token contract identifies the asset on Ethereum, but it does not replace the need to control the Ethereum address. For an ETHFI holder, the practical setup is therefore two-part: add the correct ERC-20 token details, then use the Ethereum address controlled by the Cryptnox card.
The Cryptnox Crypto Hardware Wallet – Dual-Card Set ships uninitialised. During the normal setup process, the seed is generated inside both secure elements, so the second card is the backup. That backup model applies to the Ethereum address used for ETHFI after ETHFI has been added in the app.
No recovery phrase has to be written down by default to create the backup card. Importing a BIP39 recovery phrase of 12 or 24 words is available as an advanced option, but it is not the default route for this product.
For ETHFI, this means the backup is tied to the same Ethereum address model used by the ERC-20 token. The token is identified by its Ethereum contract address, and the backup card is created during the Dual-Card Set setup rather than through a default paper recovery step.
The Cryptnox wallet is a contact and NFC smart card. You can tap the card to a phone when using the Cryptnox app, or insert the card into a reader when using the contact interface. ETHFI does not require a separate card body or a preloaded ETHFI profile; it is added as an Ethereum ERC-20 token in the app.
Unlocking through the Cryptnox app can use the phone’s face or fingerprint check. The card itself has no face or fingerprint sensor. The card’s role is to hold the private keys inside the secure element, while the phone provides the local unlock step in the app.
The free Cryptnox app is available on iOS and Android. For ETHFI, the app is where you add the Ethereum ERC-20 token details, check the 0x-prefixed Ethereum address format, and use the card by tapping it to the phone.
If you want to compare the ETHFI card setup with the broader product line, the Cryptnox hardware wallet collection gives the parent overview for the card wallet range.
The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. For ETHFI, the address used in those flows is the Ethereum-style 0x-prefixed EVM address controlled by the Cryptnox card.
WalletConnect and MetaMask do not change how ETHFI is added to the card wallet. ETHFI is still an ERC-20 token on Ethereum, and it still needs the contract address 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb when the token is added or verified. The private keys are generated inside the secure element and never leave it.
For product operation steps, the Cryptnox hardware wallet tutorials are the place to review how the card and app are used together before you add the ETHFI contract details.
ETHFI has a precise setup path: Ethereum, ERC-20, a 0x-prefixed 20-byte EVM address, and the contract address 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb. Those details should not be carried over to a non-Ethereum asset just because the same Cryptnox card set is used for custody.
If you also manage TRON assets, keep the ETHFI contract entry separate from that workflow. The TRON hardware wallet page is the relevant network-specific reference for TRON, while ETHFI remains an Ethereum ERC-20 token.
Bitcoin is different from ETHFI at the asset model level. ETHFI is added as an Ethereum token contract, while the Bitcoin hardware wallet page covers Bitcoin rather than an ERC-20 token contract on Ethereum.
Polygon can also appear in EVM wallet contexts, but ETHFI in this setup is specifically the Ethereum ERC-20 token at 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb. If you hold Polygon assets too, the Polygon hardware wallet page should be used for that network context instead of reusing the ETHFI token entry.
Choose the Cryptnox Crypto Hardware Wallet – Dual-Card Set for ETHFI if you want to hold ether.fi ETHFI through an Ethereum ERC-20 token entry and a card-based custody model. The product is Swiss-engineered, and the cards are made in Switzerland.
The ETHFI buying decision comes down to three product details: the token is added manually in the Cryptnox app, the Ethereum private keys are generated inside the secure element and never leave it, and the second card is created as the backup during normal setup. ETHFI is not pre-programmed, so the contract address remains part of the initial setup.
The purchase page for this card set is the Cryptnox Crypto Hardware Wallet – Dual-Card Set. Use the Ethereum ERC-20 ETHFI details above when adding the token after setup.
No. ETHFI is not pre-programmed on the Cryptnox cards. The Dual-Card Set ships uninitialised, and ETHFI is added once in the Cryptnox app through Add a Token or Add a Network. Use Ethereum as the chain, ERC-20 as the standard, and 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb as the token contract.
Use an Ethereum address for ETHFI. The format is a 0x-prefixed 20-byte EVM address, because ETHFI is held as an ERC-20 token on Ethereum. The address is controlled by the Cryptnox card, with private keys generated inside the secure element and never leaving it.
The ETHFI ERC-20 contract address on Ethereum is 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb. Use that address when adding ETHFI as a token in the Cryptnox app or when checking that the token entry refers to ether.fi ETHFI on Ethereum.
The Dual-Card Set ships uninitialised. During normal setup, the seed is generated inside both secure elements, so the second card is the backup card. No recovery phrase has to be written down by default. Importing a BIP39 recovery phrase of 12 or 24 words is an advanced option.
No. The card itself has no face or fingerprint sensor. Unlocking through the Cryptnox app can use the phone’s face or fingerprint check. The card protects the private keys in the secure element, while the phone provides the local unlock step in the app.
Yes. The free Cryptnox app on iOS and Android connects to Web3 through WalletConnect and works with MetaMask. ETHFI remains an ERC-20 token on Ethereum, so the relevant wallet address is the 0x-prefixed EVM address controlled by your Cryptnox card.
No. ETHFI is held with Cryptnox as an ERC-20 token on Ethereum. Add it through the Ethereum token route in the Cryptnox app, using the ETHFI contract address 0xfe0c30065b384f05761f15d0cc899d4f9f9cc0eb. Do not expect a separate ETHFI chain to be preloaded.
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.
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.