Designing Double-Click-Based Unlocking Mechanism on Smartphones

Wenjuan Li, Jiao Tan, Nan Zhu, Yu Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


Smartphones have gained huge popularity and rapidly changed the way of people’s living habits and communication style. Despite the widespread adoption, there is a big challenge to protect data security on smartphones. This is because phone users often store their personal data (e.g., images) and proceed sensitive tasks (e.g., financial operations) on the device. To secure the device from unauthorized access, designing an appropriate unlocking mechanism is an expected solution. To complement existing schemes, we advocate that combining behavioral biometrics can enhance the security of unlocking mechanisms. In this work, we develop a double-click-based unlocking scheme (DCUS), which allows users to unlock the phone by double clicking on the pre-selected location on an image. For verification, DCUS has to check selected images, image location and behavioral features of double-click action. In the user study, we involve 40 participants and explore some common supervised algorithms. The results demonstrate that participants can achieve a good success rate (over 96%) with positive feedback.

Original languageEnglish
Title of host publicationSpaCCS 2020 International Workshops, 2020, Proceedings
EditorsGuojun Wang, Bing Chen, Wei Li, Roberto Di Pietro, Xuefeng Yan, Hao Han
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages13
ISBN (Print)9783030688837
Publication statusPublished - Dec 2020
Externally publishedYes
Event13th International Conference on Security, Privacy, and Anonymity in Computation, Communication, and Storage, SpaCCS 2020 - Nanjing, China
Duration: 18 Dec 202020 Dec 2020

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume12383 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference13th International Conference on Security, Privacy, and Anonymity in Computation, Communication, and Storage, SpaCCS 2020


  • Behavioral authentication
  • Double click
  • Smartphone security
  • Touch dynamics
  • User authentication

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


Dive into the research topics of 'Designing Double-Click-Based Unlocking Mechanism on Smartphones'. Together they form a unique fingerprint.

Cite this