Summary

Smart contracts that benefit from Automata 2FA protection must inherit from the TwoFactorBase contract. Any function calls that require 2FA protection must include the only2FA modifier.

2FA Guru relies on the TwoFactorAuthentication contract to:

• (1) store the mapping between primary and recovery wallets, and
• (2) verifies the authenticity of the transaction based on the provided signature from the relayer.

The binding between a primary wallet and the recovery wallet is subjected to the usual 2FA workflow, as the Authenticator contract itself also extends the TwoFactorBase contract. After a user has completed the binding process, they can easily query their recovery wallet address by providing their primary wallet address.

Read the next section to learn more about the TwoFactorBase contract.