Biometric Authentication Solutions

ZenGo integrates biometric authentication as a core layer of both wallet access and account recovery. The wallet's FaceLock feature uses facial recognition to verify user identity during the recovery process, working alongside email verification and an encrypted backup file stored in iCloud or Google Drive to form a multi-factor recovery system. Because the biometric check is one component of a layered recovery model built on MPC cryptography, compromising any single factor is insufficient on its own to gain wallet access. This design ties authentication to the physical user rather than a transferable secret like a password or seed phrase. ZenGo has reported no successful wallet hacks since its 2018 launch, a record it attributes to the combination of MPC key distribution and this layered biometric authentication approach across its 2 million-user base.

Passkeys Wallet is an embedded wallet SDK that replaces seed phrases with WebAuthn passkeys — the biometric standards behind Face ID and fingerprint unlock — to create and sign transactions across Solana, Bitcoin, Ethereum, and over a dozen EVM-compatible chains. Built by Exodus Movement and launched in July 2024, the wallet activates through a browser popup with no extension install required. The biometric event happens entirely on the user device, with no passphrase to memorize or back up. The underlying security model uses multi-party computation (MPC), splitting the private key between the user device and a remote server so neither party alone can authorize a transaction. A signing event requires the client-side partial key — which decrypts only during a biometric authentication — plus the server-side component. Because WebAuthn credentials are cryptographically scoped to the originating domain, phishing pages cannot harvest usable signing material, eliminating a common credential-theft vector that affects traditional crypto wallets.

SollPay integrates biometric authentication as the primary user-facing security layer for its Solana wallet. Face ID and equivalent biometric methods authenticate users at the app level, while a separate zero-knowledge proof layer handles on-chain identity verification. These two layers operate independently, providing defense in depth without relying on passwords or seed phrases. The biometric layer pairs with the device's secure enclave — iOS Secure Enclave or Android TPM — where the private key is generated and stored without ever being transmitted externally. A ZK Proving Server running inside a Trusted Execution Environment handles proof generation, ensuring no personal data is exposed on-chain. The result is a wallet that authenticates through familiar biometric hardware while maintaining cryptographic security standards across both the app and on-chain layers.

HOT Wallet supports biometric login as one of its core authentication methods, alongside SMS verification, Google Authenticator, and email, allowing users to access a non-custodial multi-chain wallet without managing seed phrases for day-to-day authentication. This authentication model is designed to lower the barrier to Web3 entry while preserving self-custody of assets across 140+ blockchains including Solana. The wallet's security architecture pairs biometric and multi-factor authentication options with HOT Protocol's distributed MPC validator network, where threshold cryptography ensures no single party can access user funds even with valid authentication credentials. As of mid-2026, HOT Wallet reports over 35 million wallets, with its combination of biometric-friendly authentication, replaceable seed phrases, and transferable account ownership representing a distinct approach to Web3 identity and access management.