The Cryptnox Crypto Hardware Wallet – Dual-Card Set can hold SYN as an EVM token after you add the token or network in the Cryptnox app; SYN is not pre-programmed on the card. On Ethereum, SYN uses the ERC-20 contract 0x0f2d719407fdbeff09d87557abb7232601fd9f29, with EVM deployments also used on Base, Fantom, Polygon PoS, BNB Smart Chain, Arbitrum One, Optimism, and Avalanche. Private keys are generated inside the secure element and never leave it.
CRYPTNOX products are also available worldwide through our official Amazon stores.
SYN is held with Cryptnox through the EVM token route. The card does not arrive with a Synapse asset screen already prepared, so setup starts by adding the correct EVM network or adding the SYN token record inside the Cryptnox app. This matters because SYN can exist in more than one EVM environment, and the selected network is part of the receiving and signing context.
On Ethereum, SYN is an ERC-20 token. The Ethereum token contract is 0x0f2d719407fdbeff09d87557abb7232601fd9f29. SYN is also deployed on multiple EVM networks, including Base, Fantom, Polygon PoS, BNB Smart Chain, Arbitrum One, Optimism, and Avalanche. When you add SYN manually, use the contract or deployment for the network where your tokens are held.
The wider Cryptnox coin and blockchain support page is useful when you want to compare SYN with other assets before deciding which networks to add in the app.
The free Cryptnox app is available on iOS and Android. For SYN, the setup route is straightforward: initialise the Dual-Card Set, open the app, add the EVM network if needed, then add SYN as a token on the network where you want to receive or manage it. The receiving address uses the familiar 0x-prefixed EVM format, but the network selection still has to match the SYN deployment.
For a guided product walkthrough before moving SYN, use the Cryptnox hardware wallet tutorials. The tutorials help separate first-time smart-card setup from later use, where you tap the card to a phone or insert it into a reader for signing.
Because SYN is not pre-programmed, do not rely on the ticker alone. Add the network and token details that correspond to the SYN deployment you plan to use.
The Cryptnox Crypto Hardware Wallet – Dual-Card Set is a contact and NFC smart card. You can tap the card to a phone, or insert it into a reader. For SYN, that means your EVM account can be used with a card-based signing flow while the token remains an EVM asset identified by its network, token contract, and 0x address.
Private keys are generated inside the secure element and never leave it. The card uses an EAL6+-certified chip, and sensitive key operations remain inside the secure element. When you approve a SYN transfer or another EVM transaction, the card signs for the account without exposing the private key to the app interface.
If you are comparing smart-card storage for several assets, the Cryptnox hardware wallet collection explains the broader product family while this page focuses on the SYN EVM token route.
The Dual-Card Set ships uninitialised. During setup, the seed is generated inside both secure elements, so the second card is the backup for the first card. That is the normal backup model for a new Cryptnox wallet: the paired cards are created together for the same wallet during initialisation.
For SYN holders, the backup model is useful because access to the EVM account is separate from the token display step. The account can hold SYN after you add the token or network in the app, and the second card remains the recovery card for the same wallet setup. You can keep one card for regular SYN activity and store the other separately.
You can buy the Cryptnox Crypto Hardware Wallet – Dual-Card Set for this two-card setup. The product is Swiss-engineered, and the cards are made in Switzerland.
Ethereum SYN follows the ERC-20 standard, and the Ethereum contract is 0x0f2d719407fdbeff09d87557abb7232601fd9f29. Public market pages identify SYN as the token for Synapse. On Cryptnox, the buyer question is practical: add the EVM route that matches the SYN tokens you intend to hold, then use the 0x address controlled by your card setup.
SYN is also deployed on multiple EVM networks, including Base, Fantom, Polygon PoS, BNB Smart Chain, Arbitrum One, Optimism, and Avalanche. The address format can look the same across these environments, but the network context determines where the token is received and where a transaction is signed.
If your SYN activity includes Polygon PoS, compare the related Polygon hardware wallet page. If you also hold assets with a different account and transaction model, the Bitcoin hardware wallet page shows a separate wallet workflow.
The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. For SYN, this lets you use the EVM account controlled by your Cryptnox cards in the network context where SYN is held. The card remains present for signing, either by tapping it to a phone or inserting it into a reader.
WalletConnect is useful when a Web3 service asks for a wallet connection from a mobile or browser session. MetaMask support is useful when your existing EVM workflow uses MetaMask for account interaction and network selection. In both cases, SYN handling depends on the same checks: network, token, address, and transaction details.
If you use other EVM or non-EVM assets alongside SYN, the TRON hardware wallet page and the Ronin hardware wallet page help keep those workflows distinct from the SYN EVM token route.
A SYN buyer needs a wallet that can manage an EVM account, add the token route accurately, and preserve access through a clear backup model. The Cryptnox Crypto Hardware Wallet – Dual-Card Set matches that workflow by combining a secure-element smart card with a paired backup card created during setup.
SYN is not treated as a preloaded asset. You add it once in the Cryptnox app through Add a Token or Add a Network, depending on the EVM environment you plan to use. On Ethereum, the asset is ERC-20 SYN at 0x0f2d719407fdbeff09d87557abb7232601fd9f29. On Base, Fantom, Polygon PoS, BNB Smart Chain, Arbitrum One, Optimism, or Avalanche, use the relevant deployment for that network.
The card format is also practical for SYN holders who move between app-based account management and Web3 connections. You can tap to a phone, insert into a reader, connect through WalletConnect, and work with MetaMask while the private keys stay inside the secure element. The app may use the phone’s face or fingerprint check for unlock, and the card itself has no biometric sensor.
For SYN, the buying decision is less about a special token mode and more about controlling the EVM account that holds the token. Cryptnox provides that account through a dual-interface smart-card wallet, a second card for backup, and manual token setup that keeps the network choice visible before you receive or sign.
No. SYN is not pre-programmed on the Cryptnox card. The Dual-Card Set ships uninitialised, and you add SYN in the Cryptnox app after setup. Use Add a Token for the relevant contract, or use Add a Network first if the EVM network you want is not already present.
For Ethereum, SYN is an ERC-20 token with the contract address 0x0f2d719407fdbeff09d87557abb7232601fd9f29. If you are using SYN on another EVM network, use the contract or deployment for that specific network rather than assuming the Ethereum contract applies everywhere.
SYN uses an EVM account address when held through this route. The receiving address is a 0x-prefixed 20-byte EVM address. Because several EVM networks use the same address style, always confirm the network as well as the address before receiving or sending SYN.
Yes. SYN is also deployed on multiple EVM networks, including Base, Fantom, Polygon PoS, BNB Smart Chain, Arbitrum One, Optimism, and Avalanche. Add the relevant network or token manually in the Cryptnox app before using that deployment.
The Dual-Card Set ships uninitialised. During setup, the seed is generated inside both secure elements, so the second card is the backup for the same wallet. The normal setup does not require writing down a recovery phrase. Importing an existing BIP39 recovery phrase is an advanced option.
No. The card itself has no biometric sensor. App unlock can use the phone’s face or fingerprint check, while private keys are generated inside the card’s secure element and never leave it.
Yes. The free Cryptnox app on iOS and Android connects to Web3 through WalletConnect and works with MetaMask. For SYN, make sure the connected network matches the deployment you added before you approve transfers, approvals, or other EVM transactions.
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.