
Cryptnox
A hardware wallet in a credit-card form factor that signs transactions with an NFC tap and skips the seed phrase entirely.

What is Cryptnox?
Cryptnox is a hardware wallet built into an EAL6+ secure-element smart card. Users tap the card to a phone running the Cryptnox app to sign transactions, manage balances, and connect to dapps via WalletConnect. Backups happen by writing keys to a second card instead of writing down a 12- or 24-word recovery phrase. Built by a Geneva-based team and certified by the FIDO Alliance.
Web3 dapps and developer tools related to Cryptnox
Discover blockchain applications that are frequently used with Cryptnox.
Developer resources from Alchemy

How do ERC-4337 smart contract wallets work?
Learn How ERC-4337 Compliant Smart Contract Wallets Work

What EIP-7702 means for MetaMask and other wallets
Discover how EIP-7702 will impact wallet providers in 2025, what features users will expect, and the recommended implementation for success.

How Exa App reimagined banking with smart wallets
Case study: How Exa App transformed crypto banking with smart wallets, eliminating gas fees and seed phrases for users while reducing their costs by 20x
Cryptnox alternatives
Explore web3 competitors and apps like Cryptnox.
App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

