2021

Constantinides, A., Fidas, C., Belk, M., Pietron, A., Han, T., Pitsillides, A. (2021). From hot-spots towards experience-spots: Leveraging on users' sociocultural experiences to enhance security in cued-recall graphical authentication. International Journal of Human-Computer Studies (Impact Factor: 3.16), 149, Elsevier https://doi.org/10.1016/j.ijhcs.2021.102602

2020

Constantinides, A., Belk, M., Fidas, C., Pitsillides, A. (2020). An eye gaze-driven metric for estimating the strength of graphical passwords based on image hotspots. ACM Intelligent User Interfaces (IUI 2020), ACM Press, 33-37 (16% acceptance rate). https://doi.org/10.1145/3377325.3377537

Costi, A., Belk, M., Fidas, C., Constantinides, A., Pitsillides, A. (2020). CogniKit: An extensible tool for human cognitive modeling based on eye gaze analysis. ACM Intelligent User Interfaces (IUI 2020), ACM Press, 130-131 https://doi.org/10.1145/3379336.3381460

---

2019

Constantinides, A., Fidas, C., Belk, M., Pitsillides, A. (2019). "I recall this picture": Understanding picture password selections based on users' sociocultural experiences. ACM Web Intelligence (WI 2019), ACM Press, 408-412. https://doi.org/10.1145/3350546.3352557

Fidas, C., Belk, M., Hadjidemetriou, G., Pitsillides, A. (2019). Influences of mixed reality and human cognition on picture passwords: An eye tracking study. IFIP TC13 Human-Computer Interaction (INTERACT 2019), Springer-Verlag, 304-313. https://doi.org/10.1007/978-3-030-29384-0_19

Constantinides, A., Belk, M., Fidas, C., Pitsillides, A. (2019). On the accuracy of eye gaze-driven classifiers for predicting image content familiarity in graphical passwords. ACM User Modeling, Adaptation and Personalization (UMAP 2019), ACM Press, 201-205. https://doi.org/10.1145/3320435.3320474

---

2018

Constantinides, A., Fidas, C., Belk, M., & Samaras, G. (2018). On sociocultural-centered graphical passwords: An initial framework. ACM SIGCHI Human-Computer Interaction with Mobile Devices and Services (MobileHCI 2018), ACM Press, 277-284. https://doi.org/10.1145/3236112.3236150

Constantinides, A., Belk, M., Fidas, C., & Samaras, G. (2018). On cultural-centered graphical passwords: Leveraging on users’ cultural experiences for improving password memorability. ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2018), ACM Press, 245-249. https://doi.org/10.1145/3209219.3209254

Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., & Avouris, N. (2018). Influences of human cognition and visual behavior on password security during picture password composition. ACM SIGCHI Human Factors in Computing Systems (CHI 2018), ACM Press, paper 87. https://doi.org/10.1145/3173574.3173661

Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., & Avouris, N. (2018). Eye gaze-driven prediction of cognitive differences during graphical password composition. ACM SIGCHI Intelligent User Interfaces (IUI 2017), ACM Press, 147-152. https://doi.org/10.1145/3172944.3172996

---

2017

Belk, M., Fidas, C., Germanakos, P., & Samaras, G. (2017). The interplay between humans, technology and user authentication: a cognitive processing perspective. Computers in Human Behavior (Impact Factor: 4.252), 76, Elsevier, 184-200. https://doi.org/10.1016/j.chb.2017.06.042

Belk, M., Pamboris, A., Fidas, C., Katsini, C., Avouris, N., & Samaras, G. (2017). Sweet-spotting security and usability for intelligent graphical authentication mechanisms. ACM Web Intelligence (WI 2017), ACM Press, 252-259. https://doi.org/10.1145/3106426.3106488

Belk, M., Fidas, C., Katsini, C., Avouris, N., & Samaras, G. (2017). Effects of human cognitive differences on interaction and visual behavior in graphical user authentication. IFIP TC13 Human-Computer Interaction (INTERACT 2017), Springer-Verlag, 287-296. https://doi.org/10.1007/978-3-319-67687-6_19

Raptis, G., Katsini, C., Belk, M., Fidas, C., Samaras, G., & Avouris, N. (2017). Using eye gaze data and visual activities to infer human cognitive styles: Method and feasibility studies. ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2017), ACM Press, 164-173. https://doi.org/10.1145/3079628.3079690

Katsini, C., Fidas, C., Belk, M., Avouris, N., & Samaras, G. (2017). Influences of users’ cognitive strategies on graphical password composition. ACM SIGCHI Human Factors in Computing Systems (CHI EA 2017), ACM Press, 2698-2705. https://doi.org/10.1145/3027063.3053217