Advancements in Sensitive Information Recognition Through Blockchain Technology

In the face of an increasingly digitized and informationized society, biometric technologies, including fingerprint recognition and facial recognition, have penetrated into our lives. However, sensitive information data stored using traditional database technology still faces data security issues during storage and use, such as leakage, tampering, and identity theft. On this premise, this article designs a blockchain based airport sensitive information security identification method, which ensures the integrity and security of sensitive information data during storage and use through the characteristics of blockchain decentralization, tamper resistance, and traceability. This article selects Ethereum blockchain as the platform, facial recognition technology based on deep learning as the identity authentication method, smart contracts as the specific implementation technology, and airports as the specific application scenarios of this technology. This article first outlines the research progress of facial recognition technology and blockchain technology in information recognition technology. Secondly, the specific implementation path of this method was introduced. Then, the functionality and performance of the method were tested through written test cases, and the security of the method was analyzed. Finally, a summary of the work in this article was made, and further improvement and optimization directions were proposed.