Beyond One Lock: The Case for Multi-Channel Mobile Authentication

Traditional 2FA apps apply the same security model to every account, forcing users to choose between universal friction or inadequate protection for sensitive accounts. LocalAuth demonstrates a better approach: matching security levels to account value through multiple trust boundaries (Face ID for everyday use, YubiKey for critical accounts, FIDO2 keys for others) combined with local-first architecture. This design philosophy shows that stronger security and better usability aren't mutually exclusive—they require thoughtful, differentiated solutions.