WristUnlock: Secure and Usable Smartphone Unlocking with Wrist Wearables

Lili Zhang, Dianqi Han, Ang Li, Tao Li, Yan Zhang, Yanchao Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose WristUnlock, a novel technique that uses a wrist wearable to unlock a smartphone in a secure and usable fashion. WristUnlock explores both the physical proximity and secure Bluetooth connection between the smartphone and wrist wearable. There are two modes in WristUnlock with different security and usability features. In the WristRaise mode, the user raises his smartphone in his natural way with the same arm carrying the wrist wearable; the smartphone gets unlocked if the acceleration data on the smartphone and wrist wearable satisfy an anticipated relationship specific to the user himself. In the WristTouch mode, the wrist wearable sends a random number to the smartphone through both the Bluetooth channel and a touch-based physical channel; the smartphone gets unlocked if the numbers received from both channels are equal. We thoroughly analyze the security of WristUnlock and confirm its high efficacy through detailed experiments.

Original languageEnglish (US)
Title of host publication2019 IEEE Conference on Communications and Network Security, CNS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages28-36
Number of pages9
ISBN (Electronic)9781538671177
DOIs
Publication statusPublished - Jun 2019
Event2019 IEEE Conference on Communications and Network Security, CNS 2019 - Washington, United States
Duration: Jun 10 2019Jun 12 2019

Publication series

Name2019 IEEE Conference on Communications and Network Security, CNS 2019

Conference

Conference2019 IEEE Conference on Communications and Network Security, CNS 2019
CountryUnited States
CityWashington
Period6/10/196/12/19

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Keywords

  • security
  • Smartphone authentication
  • usability

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

Cite this

Zhang, L., Han, D., Li, A., Li, T., Zhang, Y., & Zhang, Y. (2019). WristUnlock: Secure and Usable Smartphone Unlocking with Wrist Wearables. In 2019 IEEE Conference on Communications and Network Security, CNS 2019 (pp. 28-36). [8802715] (2019 IEEE Conference on Communications and Network Security, CNS 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CNS.2019.8802715