Blockchain Account Abstraction (AA) is a powerful evolution in blockchain account design that allows smart contract accounts to act as primary user accounts, replacing traditional externally owned accounts (EOAs) with programmable, flexible smart wallets. This approach removes many Web3 usability barriers—such as mandatory private key management and native gas token requirements—by encapsulating account logic within smart contracts. It enables customizable authentication, gas fee sponsorship, batch transaction execution, and better wallet recovery without altering core blockchain protocol layers. These improvements help enable more intuitive and secure user experiences on Ethereum and EVM-compatible networks.