1. Andriotis, P., Tryfonas, T., Oikonomou, G., Yildiz, C.: A pilot study on the security of pattern screen-lock methods and soft side channel attacks. In: WISEC 2013, pp. 1–6. ACM, Budapest (2013)
2. Aviv, A.J., Fichter, D.: Understanding visual perceptions of usability and security of android’s graphical password pattern. In: CSAC 2014, pp. 286–295. ACM, New Orleans (2014)
3. Aviv, A.J., Gibson, K.L., Mossop, E., Blaze, M., Smith, J.M.: Smudge attacks on smartphone touch screens. Woot 10, 1–7 (2010)
4. Aviv, A.J., Prak, J.L.: Comparisons of data collection methods for android graphical pattern unlock. In: SOUPS 2015. USENIX Association, Ottawa (2015)
5. Bier, A., Sroczynski, Z.: Evaluation of pattern lock codes strength for increased security in mobile applications. In: Rostanski, M., Pikiewicz, P., Buchwald, P., Maczka, K. (eds.) Proceedings of the 11th Scientific Conference Internet in the Information Society 2016. Academy of Business in Dabrowa Gornicza Press, Dąbrowa Górnicza (2016)