1. Wang, Y.H., Liu, J., Yu, Z.: Application of RFID in laboratory access control attendance. J. Chongqing Univ. Arts Sci. 32(5), 132–135 (2013). (in Chinese)
2. Lin, S.: Fast face recognition algorithm for laboratory attendance system. Inform. Technol. 4, 16–22 (2019). (in Chinese)
3. Wang, Y.H.: Design and implementation of fingerprint attendance system based on student management in laboratry. Wirel. Internet Technol. 5, 63–64 (2017). (in Chinese)
4. Roeding, C., Emigh, A.T.: Method and system for detecting presence using a wifi network probe detector: US. US20110029359[P] (2011)
5. Gao, J., Yuan, D.Y.: Design and research of early warning system based on WIFI probe. J. People’s Public Secur. Univ. China (Sci. Technol.) 3, 89–93 (2016). (in Chinese)