In the context of the COVID-19 pandemic and special scenarios, the normalization of online work, office and learning has brought the issue of digital signature to be solved. This paper presents an innovative research on a remote biomimetic signature robot based on IoT, utilizing Raspberry Pi 4B and single-chip microcomputer as the core devices. This project mainly consists of three modules: client module, server module, and transmission module. The client module designs the client app using the Vue framework, supporting component-based and module-based development. The server module adopts embedded development with single-chip microcomputer and Raspberry Pi. The transmission module develops a new algorithm suitable for this project by learning sha1, md5, base64 and other algorithms, and using secure encryption algorithms and data destruction to ensure the data security of the signature robot, avoiding data leakage and tampering issues. After testing, the remote signature robot is reliable and practical. Through this project, not only has the theoretical and practical ability of university students been strengthened, but also their self-learning ability and application innovation ability have been expanded, and their social service awareness has been enhanced, laying a solid foundation for their future career development.