Golden Finance reports that Ethereum co-founder Vitalik Buterin published a latest blog post detailing his vision for an ideal crypto wallet. The article focuses on security and privacy, and proposes key features such as cross-L2 transaction experience, account security, fraud prevention, and data wallets. In terms of cross-L2 transactions, Vitalik proposed using chain-specific address formats (such as address@optimism.eth) and suggested that wallets automatically handle cross-chain exchange and transfer processes. In terms of account security, he recommended the use of social recovery and multi-signature mechanisms, and a 2-of-3 protection scheme for new users, including zk-email, local keys and service provider backup keys. Regarding privacy protection, the article emphasizes the need to integrate functions such as privacy pools and stealth addresses directly into mainstream wallets to achieve default privacy. In terms of data storage, Vitalik suggested that wallets evolve into personal data storage tools and use an M-of-N key sharing mechanism to protect user data. Looking to the future, Vitalik predicts that new technologies such as AI and brain-computer interface will completely change the way wallets interact.