Tu, Hao, Tie Cao, and Jinhong Wei. “A Blockchain-Based Identity Collaboration Model for Cross-Airport Employee One-Card Systems”. International Journal of Computer Science and Information Technology 8, no. 2 (February 10, 2026): 92–96. Accessed September 12, 2026. https://wepub.org/index.php/IJCSIT/article/view/5960.