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Electrotechnical and Computer Engineering

Vol. 40 No. 12 (2025): Proceedings of the Faculty of Technical Sciences

METHODS FOR UNLOCKING MOBILE PHONES

  • Jelena Petrić
DOI:
https://doi.org/10.24867/33BE31Petric
Submitted
January 16, 2026
Published
2026-02-18

Abstract

This paper deals with forensic methods for unlocking the screens of Android and iOS devices, along with an analysis of modern security mechanisms and the challenges they pose. Smartphone operating systems and security architectures were analyzed, as well as existing approaches to bypassing biometric authentication, passwords, and pattern protection using forensic tools. Special attention is paid to practical testing of the resilience of biometric systems and research of characteristic locking patterns, with a focus on the ethical and legal aspects of evidence collection.

References

  1. [1] Prof. dr Stevan Gostojić, Fakultet tehničkih nauka, Novi Sad, predmet Digitalna forenzika, Uvod u digitalnu forenziku (predavanja 2023, lekcija 1)
  2. [2] Mobile operating systems popularity statistics, https://gs.statcounter.com/os-market share/mobile/worldwide (pristupljeno u septembru 2025.)
  3. [3] Yi Xu, True Price, Jan-Michael Frahm, Fabian Monrose. Virtual U: Defeating Face Liveness Detection by Building Virtual Models from Your Public Photos, USENIX Security Symposium 2016.