Cryptnox is a smartcard producer based in Switzerland that provides secure high-end hardware wallet solutions for storing and managing cryptocurrencies, both for consumers as well as for businesses. With their reputable crypto hardware wallet, you can easily access your cryptos, make transactions, protect your assets from hackers, and seamlessly perform backup operations of your crypto seeds.In addition, their line of products also include a Fido Card that support the Fido2 security key authentication protocol. A FIDO U2F security key is a card which can be used either as a single factor or as a second factor to securely log in to online services that support the FIDO U2F standard.