IllusionPIN: Shoulder-Surfing Resistant Authentication Using Hybrid Images. - Athanasios Papadopoulos 001; Toan Nguyen 001; Emre Durmus; Nasir D. Memon (IEEE Trans. Inf. Forensics Secur., 2017)

Hard-Attention for Scalable Image Classification. - Athanasios Papadopoulos 001; Pawel Korus; Nasir D. Memon (NeurIPS, 2021)