Human Auth SDK
The Human Auth SDK by InterLink enables any application to integrate Single Sign-On (SSO) functionality, tied not to wallets or email addresses, but to verified human identity.
Last updated
The Human Auth SDK by InterLink enables any application to integrate Single Sign-On (SSO) functionality, tied not to wallets or email addresses, but to verified human identity.
Last updated
Unlike typical SSO systems tied to centralized identity providers (e.g., Google or Facebook), InterLink SSO uses on-chain, biometric-anchored identity, ensuring each login is performed by a unique, verified human.
Components
InterLink SDK (frontend): injected into web/mobile client
InterLink App (mobile): handles secure biometric confirmation
Verifier Node: decentralized endpoint (on-chain or light node) that verifies signed payloads
Credential Resolver (optional): fetches and validates user-bound credentials (e.g., passport, age proof)
Core Capabilities
Biometric-based login (liveness, uniqueness enforced)
JWT or ZK-style signed assertions of human = true, age > 18, or has_passport = true
InterChain identity binding — InterLink ID can be mapped to wallets across EVM, Solana, Cosmos, etc.
Offline-capable — signatures cached locally; used for dApps with intermittent connectivity
No PII transmission — biometric and credential data remain on-device, never exposed
Integration Highlights
Web2-ready: SDK available as JavaScript module, RESTful fallback
Web3-native: Pluggable with WalletConnect, Ethers.js, wagmi
Mobile-ready: React Native and Flutter bridges supported
Developer Options: Verify-only (read a Human)
Challenge flow (return signed payload for replay protection)
Credential gate logic (use cases: age, residency, document check)
