RAMI KHALEEL AHMED. Stateless Geometric Watermarking for Replay-Resistant QR-Based Attendance Verification. International Journal of Computer Information Systems and Industrial Management Applications, [S. l.], v. 18, n. 19s, p. 117–127, 2026. DOI: 10.70917/ijcisim-2026-5004. Disponível em: https://cspub-ijcisim.org/index.php/ijcisim/article/view/5004. Acesso em: 24 aug. 2026.