With the development of dapp, it has become an irreversible trend for everyone to login to various dapps with Ethereum’s accounts. With the development of Ethereum ecology, ens and walletconnect are creating Sign-in With Ethereum - Proposed Workflows, but they ignore the function of privacy protection. Obviously, in some scenarios, people want to disclose their identity, but also want to protect their identity when unnecessary. I think tronado can help Ethereum achieve this demand. Zero knowledge can be used to prove that the application provides login functions under the condition of privacy protection, which will enable trondo not only protect user asset privacy, but also realize identity authentication protection, so as to better support Ethereum unified login and improve the function of trondo function in an all-round way.