Second Me is an open-source prototype designed to let users create their own AI selves, preserving personal characteristics and extending themselves into the digital world. It uses hierarchical memory modeling and user alignment algorithms to ensure user data is stored locally and remains completely private. This form of AI not only helps users manage information but also interacts with other AIs in a global network, fostering creativity and collaboration. The key advantage of Second Me is its privacy protection, empowering users with true control over their digital identity. It's suitable for tech enthusiasts, AI experts, and professionals across various fields. This product is currently under development, and the latest version can be found on GitHub.