Cryptnox supports stMATIC by securing the private key for the 0x EVM address that controls the token on Ethereum mainnet or Polygon PoS. stMATIC is defunct, and it is not a separate native coin on the Cryptnox Crypto Hardware Wallet – Dual-Card Set. Add the relevant EVM network or add the stMATIC token once in the Cryptnox app, then manage it as an ERC-20 token on Ethereum or an EVM token on Polygon PoS.
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stMATIC support on Cryptnox means control of an EVM token position, not support for a separate stMATIC native coin. The Cryptnox Crypto Hardware Wallet – Dual-Card Set secures the private key for the 0x-prefixed 20-byte EVM address that controls the token. On Ethereum mainnet, stMATIC is handled as an ERC-20 token. On Polygon PoS, stMATIC is handled as an EVM token with an ERC-20-equivalent interface.
stMATIC is defunct. Lido’s notice on sunsetting Lido on Polygon is the relevant context for treating stMATIC as a legacy token rather than a new buying target. The practical use case is preserving access to an existing EVM account that may still be associated with stMATIC on Ethereum mainnet or Polygon PoS.
The Cryptnox coin and blockchain support page is useful when a remaining stMATIC position is being reviewed alongside other Ethereum or Polygon PoS assets that may share an EVM account format.
There are two relevant stMATIC routes for a Cryptnox user: Ethereum mainnet and Polygon PoS. The Ethereum route uses the ERC-20 token on Ethereum mainnet. The Polygon PoS route uses the Polygon PoS EVM token deployment. In both cases, the account format is a 0x-prefixed 20-byte EVM address, but the token balance belongs to the chain context where that token exists.
The Ethereum token record can be viewed on Etherscan’s stMATIC token page. Polygon PoS also uses EVM-style account addressing, so a Polygon PoS stMATIC position is still controlled through a 0x address. The same-looking address format does not remove the need to select the correct network when adding or reviewing the token.
If the stMATIC position is on Ethereum mainnet, treat it as an Ethereum ERC-20 token. If the position is on Polygon PoS, treat it as the Polygon PoS EVM token. The wallet address format can look the same across both routes, but the token route is still chain-specific.
A buyer comparing stMATIC with active Polygon PoS holdings can use the Polygon hardware wallet page to separate general Polygon account planning from this defunct-token case. For a contrasting account model, the TRON hardware wallet page is useful because stMATIC is described here only through the EVM address route.
The Cryptnox Crypto Hardware Wallet – Dual-Card Set ships uninitialised, so stMATIC is not ready on the cards before the buyer sets up the wallet. After initialisation, the user adds the relevant EVM network or adds the stMATIC token entry once in the Cryptnox app. The choice depends on whether the remaining stMATIC position is on Ethereum mainnet or Polygon PoS.
The free Cryptnox app is available on iOS and Android. For stMATIC, the app is where the Ethereum or Polygon PoS account view is selected, while the card secures the private key for the 0x address. The asset-specific step is not a separate stMATIC wallet mode; it is the addition of a token view for the correct EVM network.
The Cryptnox hardware wallet tutorials help with the app and card workflow before adding a non-default token such as stMATIC. For this asset, the key detail is matching the token entry to Ethereum mainnet or Polygon PoS rather than treating stMATIC as a standalone coin.
For stMATIC, the security concern is control of the EVM private key for the address associated with the token. With the Cryptnox Dual-Card Set, private keys are generated inside the secure element and never leave it. That matters for a defunct token because the buyer is usually trying to preserve controlled access to a known EVM account, not enable a new native asset path.
The card uses an EAL6+-certified chip. For an Ethereum or Polygon PoS stMATIC position, that chip is where the EVM account key is generated and used for signing. The finished product is a contact and NFC smart card, so it can be tapped to a phone for the mobile app flow or inserted into a reader for a reader-based flow.
Unlock approval can use the phone’s fingerprint or face check through the Cryptnox app. The card itself has no fingerprint or face sensor. For stMATIC, that means the phone can help approve app access while the EVM private key remains protected inside the card’s secure element.
If stMATIC is only one part of a broader storage decision, the best crypto hardware wallet collection helps place this EVM-token use case beside other asset pages without treating defunct stMATIC as a reason to buy by itself.
The Dual-Card Set backup model is relevant when stMATIC is tied to an Ethereum or Polygon PoS address. The set ships uninitialised, and during setup the seed is generated inside both secure elements. The second card is therefore the backup for the same wallet that controls the 0x address associated with stMATIC.
In the normal stMATIC setup path, there are no recovery words to write down. The backup is the second secure smart card created as part of the same initialised set. That backup relationship follows the wallet address, not the stMATIC token label. It does not create a second balance, move the token between chains, or convert a Polygon PoS token into an Ethereum token.
If the remaining stMATIC position is on Ethereum mainnet, the backup preserves access to the same Ethereum ERC-20 account route. If the remaining position is on Polygon PoS, the backup preserves access to the same Polygon PoS EVM account route. In both cases, the second card is the practical backup for the wallet that controls the token address.
The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. For stMATIC, that means the Cryptnox-secured EVM account can be used in a connected flow that recognises the Ethereum mainnet token or the Polygon PoS token. The connected interface still needs to show the chain where the stMATIC position exists.
A stMATIC balance on Ethereum mainnet is an ERC-20 token position. A stMATIC balance on Polygon PoS is an EVM token position on Polygon PoS. The same 0x address format can be used across EVM contexts, but the token balance is not automatically the same across chains. Network selection remains part of every stMATIC-related review or action.
The signing role stays with the card because the private key for the EVM address is generated inside the secure element and never leaves it. The connected interface supplies the Ethereum or Polygon PoS context, while the Cryptnox card supplies the controlled signature for the account that owns the token position.
For comparison with non-stMATIC holdings, the Bitcoin hardware wallet page shows a different asset model from this EVM token route, while the Ronin hardware wallet page provides another comparison point for EVM-style account planning.
stMATIC is a narrow use case because the token is defunct. The Cryptnox Crypto Hardware Wallet – Dual-Card Set fits the requirement when the buyer needs a hardware smart card to control the 0x EVM address that holds or records stMATIC on Ethereum mainnet or Polygon PoS. It is not a stMATIC-specific card, and stMATIC must be added through the relevant EVM token route after setup.
The cards are made in Switzerland and use a contact and NFC smart card form factor. For a remaining stMATIC position, that means the same EVM key can be controlled through a tap-to-phone flow or by inserting the card into a reader, while the private key remains inside the secure element. The product’s backup model also avoids making a written recovery record the normal starting point for this defunct-token workflow.
For the product described on this page, order the Cryptnox Crypto Hardware Wallet – Dual-Card Set from the official shop and add stMATIC through the relevant Ethereum or Polygon PoS token route after setup.
No. stMATIC is defunct. Cryptnox support for it means hardware control of the EVM private key for an address that may be associated with stMATIC on Ethereum mainnet or Polygon PoS. It does not change the asset’s defunct status or turn stMATIC into a new buying target.
No. stMATIC is not a separate native coin. It is handled as an ERC-20 token on Ethereum mainnet or as an ERC-20-equivalent EVM token on Polygon PoS. The controlling account uses a 0x-prefixed 20-byte EVM address.
No. The Dual-Card Set ships uninitialised, and stMATIC is not enabled before setup. After setup, add the relevant EVM network or add the stMATIC token entry once in the Cryptnox app, depending on whether the token is on Ethereum mainnet or Polygon PoS.
stMATIC uses a 0x-prefixed 20-byte EVM address. That address format applies to the Ethereum ERC-20 route and to the Polygon PoS EVM token route. Cryptnox secures the private key for that EVM account inside the secure element.
During Dual-Card Set initialisation, the seed is generated inside both secure elements. The second card is the backup for the same wallet that controls the EVM address associated with stMATIC. The normal setup does not require writing down recovery words.
No. The card itself has no fingerprint or face sensor. Unlock approval can use the phone’s fingerprint or face check through the Cryptnox app, while the EVM private key for the stMATIC address remains inside the card’s secure element.
Yes. The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. For stMATIC, select the correct chain context first: Ethereum mainnet for the ERC-20 token, or Polygon PoS for the EVM token deployment there.
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.