A novel IoT-enabled portable, secure automatic self-lecture attendance system: design, development and comparison. - Ata Jahangir Moshayedi; Atanu Shuvam Roy; Hamidreza Ghorbani; Habibollah Lotfi; Xiaohong Zhang; Leifa Liao; Mehdi Gheisari (Int. J. Electron. Secur. Digit. Forensics, 2024)