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CamRadar: Hidden Camera Detection Leveraging Amplitude-modulated Sensor Images Embedded in Electromagnetic Emanations

Authors:

Kui RenAuthors Info & Claims

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, Volume 6, Issue 4

Article No.: 173, Pages 1 - 25

https://doi.org/10.1145/3569505

Published: 11 January 2023 Publication History

Abstract

Hidden cameras in sensitive locations have become an increasing threat to personal privacy all over the world. Because the camera is small and camouflaged, it is difficult to detect the presence of the camera with naked eyes. Existing works on this subject have either only covered using wireless transmission to detect cameras, or using other methods which are cumbersome in practical use. In this paper, we introduce a new direction that leverages the unintentional electromagnetic (EM) emanations of the camera to detect it. We first find that the digital output of the camera's image sensor will be amplitude-modulated to the EM emanations of the camera's clock. Thus, changes in the scope of the camera will directly cause changes in the camera's EM emanations, which constitutes a unique characteristic for a hidden camera. Based on this, we propose a novel camera detection system named CamRadar, which can filter out potential camera EM emanations from numerous EM signals quickly and achieve accurate hidden camera detection. Benefitting from the camera's EM emanations, CamRadar will not be limited by the camera transmission types or the detection angle. Our extensive real-world experiments using CamRadar and 19 hidden cameras show that CamRadar achieves a fast detection (in 16.75s) with a detection rate of 93.23% as well as a low false positive rate of 3.95%.

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Cited By

Geloczi EPöhls HKlement FPosegga JKatzenbeisser SAyday EVaidya J(2024)Unveiling the Shadows: An Approach towards Detection, Precise Localization, and Effective Isolation of Concealed IoT Devices in Unfamiliar EnvironmentsProceedings of the 23rd Workshop on Privacy in the Electronic Society10.1145/3689943.3695040(109-123)Online publication date: 20-Nov-2024
https://dl.acm.org/doi/10.1145/3689943.3695040
Zhang QLan YGuo KWang D(2024)Lipwatch: Enabling Silent Speech Recognition on Smartwatches using Acoustic SensingProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36596148:2(1-29)Online publication date: 15-May-2024
https://doi.org/10.1145/3659614
He JXiong JHu WFeng CYao EWang XLiu CChen XOkoshi TKo JLiKamWa R(2024)CW-AcousLen: A Configurable Wideband Acoustic MetasurfaceProceedings of the 22nd Annual International Conference on Mobile Systems, Applications and Services10.1145/3643832.3661882(29-41)Online publication date: 3-Jun-2024
https://dl.acm.org/doi/10.1145/3643832.3661882
Show More Cited By

Index Terms

CamRadar: Hidden Camera Detection Leveraging Amplitude-modulated Sensor Images Embedded in Electromagnetic Emanations
1. Security and privacy
  1. Human and societal aspects of security and privacy
    1. Privacy protections

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cover image Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies Volume 6, Issue 4

December 2022

1534 pages

EISSN:2474-9567

DOI:10.1145/3580286

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Copyright © 2023 ACM.

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Published: 11 January 2023

Published in IMWUT Volume 6, Issue 4

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Fundamental Research Funds for the Central Universities
National Natural Science Foundation of China
National Key Research and Development Program of China
Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang

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Cited By

Geloczi EPöhls HKlement FPosegga JKatzenbeisser SAyday EVaidya J(2024)Unveiling the Shadows: An Approach towards Detection, Precise Localization, and Effective Isolation of Concealed IoT Devices in Unfamiliar EnvironmentsProceedings of the 23rd Workshop on Privacy in the Electronic Society10.1145/3689943.3695040(109-123)Online publication date: 20-Nov-2024
https://dl.acm.org/doi/10.1145/3689943.3695040
Zhang QLan YGuo KWang D(2024)Lipwatch: Enabling Silent Speech Recognition on Smartwatches using Acoustic SensingProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36596148:2(1-29)Online publication date: 15-May-2024
https://doi.org/10.1145/3659614
He JXiong JHu WFeng CYao EWang XLiu CChen XOkoshi TKo JLiKamWa R(2024)CW-AcousLen: A Configurable Wideband Acoustic MetasurfaceProceedings of the 22nd Annual International Conference on Mobile Systems, Applications and Services10.1145/3643832.3661882(29-41)Online publication date: 3-Jun-2024
https://dl.acm.org/doi/10.1145/3643832.3661882
Sheng BHan RXiao FGuo ZGui L(2024)MetaFormerProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36435508:1(1-27)Online publication date: 6-Mar-2024
https://dl.acm.org/doi/10.1145/3643550
Wang FLv YZhu MDing HHan J(2024)XRF55Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36435438:1(1-34)Online publication date: 6-Mar-2024
https://dl.acm.org/doi/10.1145/3643543
Gu YChen JWu CHe KZhao ZDu R(2024)LocCamsProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36314327:4(1-24)Online publication date: 12-Jan-2024
https://dl.acm.org/doi/10.1145/3631432
Wang HHu JZheng THu JChen ZJiang HZheng YLuo J(2024)MuKI-Fi: Multi-Person Keystroke Inference With BFI-Enabled Wi-Fi SensingIEEE Transactions on Mobile Computing10.1109/TMC.2024.336833923:10(9835-9850)Online publication date: Oct-2024
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Zhang QWang PLi YHu JZheng HZeng FLiu CJiang H(2024)CamShield: Tracing Electromagnetics to Steer Ultrasound Against Illegal CamerasIEEE Internet of Things Journal10.1109/JIOT.2024.342847511:20(33296-33311)Online publication date: 15-Oct-2024
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Ibrahim ODi Pietro R(2024)MAG-JAM: Jamming Detection via Magnetic EmissionsComputer Security – ESORICS 202410.1007/978-3-031-70879-4_9(167-186)Online publication date: 5-Sep-2024
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Li WHe TJing NWang L(2023)mmHSV: In-Air Handwritten Signature Verification via Millimeter-Wave RadarACM Transactions on Internet of Things10.1145/36144434:4(1-22)Online publication date: 22-Nov-2023
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